arsênico — As
O elemento químico arsênico é um elemento do tipo Metalóides e de símbolo As. Tem uma massa atómica de 74.921595 u e uma configuração eletrónica [Ar] 3d10 4s2 4p3.
Synthétique
Radioactif
Liquide
Gaz
Diagrama de configuração eletrónica
características
- Número atómico
- 33
- Massa atómica
- 74.921595
- Símbolo
- As
- Ponto de fusão
- 613
- Ponto de ebulição
- 613
- Densidade
- 5.776
- Período
- 4
- Grupo
- 15
- Descoberta
- 1250 Albertus Magnus
- Abundância
- 1.8
- Raio
- 1.3
- Eletronegatividade
- 2.18
- Ionização
- 9.7886
- Isótopo
- 14
- Configuração eletrónica
- [Ar] 3d10 4s2 4p3
- Estado de oxidação
- -3,2,3,5
- Eletrão
- 2,8,18,5
O arsênico é um elemento químico não metálico de símbolo At e número atômico 33 que faz parte da família dos metaloides. Muitas vezes, está em sua forma trivalente ou pentavalente e está presente na crosta terrestre, no subsolo e em algumas águas. Em seu estado puro, o arsênico é um sólido esbranquiçado, amarelo acinzentado, ligeiramente brilhante. Sua solubilidade é muito baixa em água e muito reativa com ácidos.
O arsênico é muito tóxico e o fato de que pequenas quantidades podem ser fatais o torna um veneno natural extremamente perigoso. Na Idade Média, o arsênico era usado na fabricação de corantes patenteados para tingimento doméstico e era conhecido como "veneno colorido". A toxicidade do arsênico é reconhecida há muito tempo e na Europa era conhecido como o "veneno dos reis", pois muitos monarcas foram envenenados com ele.
Apesar de seu cloreto, o arsênico é usado como aditivo alimentar e está envolvido na fabricação de fósforos, produtos agrícolas como herbicidas e inseticidas e no tratamento de madeira. Também é usado na indústria de baterias, eletrônica e pirotecnia. O arsênico natural também é usado na indústria de semicondutores e compostos de arsênio são usados para fabricar produtos como plásticos e tintas.
Minerais que contêm arsênico
| nome próprio | Dureza | Densidade | Fórmula química |
|---|---|---|---|
| Abernathyite | — | 3.31 | K(UO2)AsO4·3H2O |
| Adamite | — | 4.30 | Zn2AsO4(OH) |
| Adelite | — | 3.73 | CaMgAsO4(OH) |
| Aerugite | — | 5.85 | Ni8.5(AsO4)2As5+O8 |
| Agardite-(Ce) | — | 3.72 | Cu2+6Ce(AsO4)3(OH)6·3H2O |
| Agardite-(La) | — | 3.72 | Cu2+6La(AsO4)3(OH)6·3H2O |
| Agardite-(Nd) | — | 3.72 | Cu2+6Nd(AsO4)3(OH)6·3H2O |
| Agardite-(Y) | — | 3.66 | Cu2+6Y(AsO4)3(OH)6·3H2O |
| Akrochordite | — | 3.19 | Mn2+5(AsO4)2(OH)4·4H2O |
| Aktashite | — | 5.50 | Cu6Hg3As4S12 |
| Alacránite | — | 3.40 | As8S9 |
| Alarsite | — | 3.32 | AlAsO4 |
| Algodonite | — | 8.38 | Cu1-xAsx (x ~0.15) |
| Allactite | — | 3.00 | Mn2+7(AsO4)2(OH)8 |
| Alloclasite | — | 6.17 | CoAsS |
| Ambrinoite | — | 3.31 | [K,(NH4)]2(As,Sb)6(Sb,As)2S13·H2O |
| Anduoite | — | 8.00 | RuAs2 |
| Andyrobertsite | — | 4.01 | KCdCu5(AsO4)4[As(OH)2O2]·2H2O |
| Angelellite | — | 4.87 | Fe3+4O3(AsO4)2 |
| Annabergite | — | 3.00 | Ni3(AsO4)2·8H2O |
| Anorpiment | — | 3.32 | As2S3 |
| Arakiite | — | 0.00 | ZnMn2+12Fe3+2As3+O3(As5+O4)2(OH)23 |
| Ardennite-(As) | — | 3.62 | Mn2+4Al4(AlMg)(AsO4)(SiO4)2(Si3O10)(OH)6 |
| Ardennite-(V) | — | 3.55 | Mn2+4Al4(AlMg)(VO4)(SiO4)2(Si3O10)(OH)6 |
| Argentobaumhauerite | — | 5.31 | Ag1.5Pb22As33.5S72 |
| Argentoliveingite | — | 0.00 | AgxPb40-2xAs48+xS112 (3 < x < 4) |
| Argentotennantite | — | 5.00 | Ag6Cu4(Fe,Zn)2As4S13 |
| Arhbarite | — | 0.00 | Cu2MgAsO4(OH)3 |
| Armangite | — | 4.43 | Mn2+26As3+18O50(CO3)(OH)4 |
| Arsenbrackebuschite | — | 6.54 | Pb2(Fe3+,Zn)(AsO4)2(OH,H2O) |
| Arsendescloizite | — | 6.57 | PbZnAsO4(OH) |
| Arsenic | — | 5.70 | As |
| Arseniopleite | — | 4.22 | (Ca,Na)NaMn2+(Mn2+,Mg,Fe2+)2(AsO4)3 |
| Arseniosiderite | — | 3.50 | Ca2Fe3+3O2(AsO4)3·3H2O |
| Arsenoclasite | — | 4.00 | Mn2+5(AsO4)2(OH)4 |
| Arsenocrandallite | — | 3.25 | CaAl3(AsO4)(AsO3OH)(OH)6 |
| Arsenoflorencite-(Ce) | — | 4.10 | CeAl3(AsO4)2(OH)6 |
| Arsenoflorencite-(La) | — | 4.10 | LaAl3(AsO4)2(OH)6 |
| Arsenoflorencite-(Nd) | — | 4.05 | NdAl3(AsO4)2(OH)6 |
| Arsenogorceixite | — | 3.65 | BaAl3AsO4(AsO3OH)(OH)6 |
| Arsenogoyazite | — | 3.33 | SrAl3(AsO4)(AsO3OH)(OH)6 |
| Arsenohauchecornite | — | 6.35 | Ni18Bi3AsS16 |
| Arsenohopeite | — | 0.00 | Zn3(AsO4)2·4H2O |
| Arsenolamprite | — | 5.30 | As |
| Arsenolite | — | 3.70 | As2O3 |
| Arsenopalladinite | — | 10.40 | Pd8As3 |
| Arsenopyrite | — | 6.07 | FeAsS |
| Arsenovanmeersscheite | — | 0.00 | U(UO2)3(AsO4)2(OH)6·4H2O |
| Arsenowagnerite | — | 0.00 | Mg2AsO4F |
| Arsenowaylandite | — | 0.00 | BiAl3(AsO4)2(OH)6 |
| Arsenpolybasite | — | 6.18 | (Ag,Cu)16As2S11 |
| Arsenquatrandorite | — | 0.00 | Ag17.6Pb12.8Sb38.1As11.5S96 |
| Arsentsumebite | — | 6.46 | Pb2Cu(AsO4)(SO4)(OH) |
| Arsenuranospathite | — | 2.54 | Al(UO2)2(AsO4)2F·20H2O |
| Arsenuranylite | — | 4.25 | Ca(UO2)4(AsO4)2(OH)4·6H2O |
| Arsiccioite | — | 5.99 | AgHg2TlAs2S6 |
| Arsmirandite | — | 0.00 | Na18Cu12Fe3+O8(AsO4)8Cl5 |
| Arthurite | — | 3.02 | CuFe3+2(AsO4)2(OH)2·4H2O |
| Asbecasite | — | 3.70 | Ca3TiAs6Be2Si2O20 |
| Asselbornite | — | 0.00 | Pb(UO2)4(BiO)3(AsO4)2(OH)7·4H2O |
| Atelestite | — | 6.82 | Bi2O(AsO4)(OH) |
| Atheneite | — | 10.20 | Pd2(As0.75Hg0.25) |
| Attikaite | — | 3.20 | Ca3Cu2Al2(AsO4)4(OH)4·2H2O |
| Auriacusite | — | 4.45 | Fe3+Cu2+AsO4O |
| Austinite | — | 4.13 | CaZnAsO4(OH) |
| Babánekite | — | 0.00 | Cu3(AsO4)2·8H2O |
| Barahonaite-(Al) | — | 0.00 | (Ca,Cu,Na,Fe3+,Al)12Al2(AsO4)8(OH,Cl)x·nH2O |
| Barahonaite-(Fe) | — | 3.03 | (Ca,Cu,Na,Fe3+,Al)12Fe3+2(AsO4)8(OH,Cl)x·nH2O |
| Barikaite | — | 5.34 | Ag3Pb10(Sb8As11)S40 |
| Bariopharmacoalumite | — | 2.58 | Ba0.5Al4(AsO4)3(OH)4·4H2O |
| Bariopharmacosiderite | — | 3.07 | Ba0.5Fe3+4(AsO4)3(OH)4·5H2O |
| Barium-zinc alumopharmocosiderite | — | 0.00 | (Ba,K)0.5(Zn,Cu)0.5(Al,Fe)4(AsO4)3·5H2O |
| Barrotite | — | 0.00 | Cu9Al(HSiO4)2[(SO4)(HAsO4)0.5](OH)12·8H2O |
| Baumhauerite | — | 5.33 | Pb12As16S36 |
| Baumhauerite II | — | 5.00 | Pb3As4S9 |
| Baumstarkite | — | 5.33 | Ag3Sb3S6 |
| Bayldonite | — | 5.50 | Cu3PbO(AsO3OH)2(OH)2 |
| Bearsite | — | 1.80 | Be2AsO4(OH)·4H2O |
| Bendadaite | — | 0.00 | Fe2+Fe3+2(AsO4)2(OH)2·4H2O |
| Benleonardite | — | 7.00 | Ag15Cu(Sb,As)2S7Te4 |
| Bergslagite | — | 3.40 | CaBe(AsO4)(OH) |
| Bernardite | — | 4.50 | TlAs5S8 |
| Bernarlottiite | — | 0.00 | Pb6(As5Sb3)S18 |
| Berzeliite | — | 4.08 | NaCa2Mg2(AsO4)3 |
| Betpakdalite-CaCa | — | 2.91 | [Ca2(H2O)17Ca(H2O)6][Mo6+8As5+2Fe3+3O36(OH)] |
| Betpakdalite-CaMg | — | 2.94 | [Ca2(H2O)17Mg(H2O)6][Mo6+8As5+2Fe3+3O36(OH)] |
| Betpakdalite-NaCa | — | 2.89 | [Na2(H2O)17Ca(H2O)6][Mo6+8As5+2Fe3+3O34(OH)3] |
| Betpakdalite-NaNa | — | 2.88 | [Na2(H2O)16Na(H2O)6][Mo6+8As5+2Fe3+3O33(OH)4] |
| Bettertonite | — | 2.02 | Al6(AsO4)3(OH)9·16H2O |
| Beudantite | — | 4.10 | PbFe3+3(AsO4)(SO4)(OH)6 |
| Biehlite | — | 0.00 | Sb3+2MoO6 |
| Billingsleyite | — | 5.90 | Ag7AsS6 |
| Bonazziite | — | 3.54 | As4S4 |
| Borisenkoite | — | 0.00 | Cu3[(V,As)O4]2 |
| Borishanskiite | — | 10.00 | Pd1+x(As,Pb)2 (x=0-0.2) |
| Boscardinite | — | 3.00 | TlPb4(Sb7As2)S18 |
| Bouazzerite | — | 2.81 | Bi6(Mg,Co)11Fe14(AsO4)18O12(OH)4·86H2O |
| Braccoite | — | 3.56 | NaMn2+5[Si5O14(OH)](AsO3OH) |
| Bradaczekite | — | 0.00 | NaCu4(AsO4)3 |
| Braithwaiteite | — | 3.75 | NaCu2+5(Ti4+Sb5+)O2(AsO4)4[AsO3(OH)]2·8H2O |
| Brandtite | — | 3.67 | Ca2Mn2+(AsO4)2·2H2O |
| Brassite | — | 2.28 | Mg(AsO3OH)·4H2O |
| Bukovskýite | — | 2.34 | Fe3+2(AsO4)(SO4)(OH)·7H2O |
| Bulachite | — | 2.60 | Al2AsO4(OH)3·3H2O |
| Burgessite | — | 2.93 | Co2(H2O)4(AsO3OH)2·H2O |
| Cabalzarite | — | 3.89 | CaMg2(AsO4)2·2H2O |
| Caesiumpharmacosiderite | — | 0.00 | CsFe4[(AsO4)3(OH)4]·4H2O |
| Cafarsite | — | 3.90 | Ca5.9Mn1.7Fe3Ti3(AsO3)12·4-5H2O |
| Cahnite | — | 3.16 | Ca2B(AsO4)(OH)4 |
| Calcioandyrobertsite | — | 0.00 | KCaCu5(AsO4)4[As(OH)2O2]·2H2O |
| Calciopetersite | — | 3.33 | Cu2+6Ca(PO4)2(PO3OH)(OH)6·3H2O |
| Calvertite | — | 5.24 | Cu5Ge0.5S4 |
| Camgasite | — | 2.40 | CaMgAsO4(OH)·5H2O |
| Canosioite | — | 4.94 | Ba2Fe3+(AsO4)2(OH) |
| Canutite | — | 4.11 | NaMn3[AsO4]2[AsO2(OH)2] |
| Cardite | — | 0.00 | Zn5.5(AsO4)2(AsO3OH)(OH)3·3H2O |
| Carducciite | — | 5.56 | (AgSb)Pb6(As,Sb)8S20 |
| Carlfrancisite | — | 0.00 | Mn2+3(Mn2+,Mg,Fe3+,Al)42[As3+O3]2(As5+O4)4[(Si,As5+)O4]6[(As5+,Si)O4]2(OH)42 |
| Carminite | — | 5.03 | PbFe3+2(AsO4)2(OH)2 |
| Caryinite | — | 4.29 | (Na,Pb)(Ca,Na)CaMn2+2(AsO4)3 |
| Castellaroite | — | 3.16 | Mn2+3(AsO4)2·4H2O |
| Ceruleite | — | 2.70 | Cu2Al7(AsO4)4(OH)13·11.5H2O |
| Cervandonite-(Ce) | — | 0.00 | (Ce,Nd,La)(Fe3+,Ti,Fe2+,Al)3O2(Si2O7)1-x+y(AsO3)1+x-y(OH)3x-3y, x=0.5, y=0.3 |
| Césarferreiraite | — | 2.93 | Fe2+Fe3+2(AsO4)2(OH)2·8H2O |
| Chabournéite | — | 5.10 | Tl4Pb2(Sb,As)20S34 |
| Chadwickite | — | 4.86 | (UO2)HAsO3 |
| Chalcophyllite | — | 2.40 | Cu18Al2(AsO4)4(SO4)3(OH)24·36H2O |
| Chaméanite | — | 6.17 | (Cu,Fe)4As(Se,S)4 |
| Chenevixite | — | 3.90 | Cu(Fe3+,Al)(AsO4)(OH)2 |
| Cherepanovite | — | 9.72 | RhAs |
| Chernovite-(Y) | — | 4.87 | YAsO4 |
| Chistyakovaite | — | 3.62 | Al(UO2)2(AsO4)2F·6.5H2O |
| Chlorophoenicite | — | 3.00 | (Mn,Mg,Zn)3Zn2AsO4(OH,O)6 |
| Chongite | — | 3.09 | Ca3Mg2(AsO4)2(AsO3OH)2·4H2O |
| Christite | — | 6.20 | TlHgAsS3 |
| Chudobaite | — | 2.94 | Mg5(AsO4)2(AsO3OH)2·10H2O |
| Chursinite | — | 9.06 | Hg1+Hg2+(AsO4) |
| Ciriottiite | — | 0.00 | Cu4Pb19(Sb,As,Bi)22(As2)S56 |
| Claudetite | — | 3.85 | As2O3 |
| Clinoclase | — | 4.00 | Cu3AsO4(OH)3 |
| Clinosafflorite | — | 7.46 | CoAs2 |
| Clinotyrolite | — | 3.22 | Ca2Cu9(AsO4,SO4)4(OH,O)10·10H2O |
| Cobaltarthurite | — | 3.22 | CoFe3+2(AsO4)2(OH)2·4H2O |
| Cobaltaustinite | — | 4.00 | CaCoAsO4(OH) |
| Cobaltite | — | 6.33 | CoAsS |
| Cobaltkieserite | — | 3.28 | CoSO4·H2O |
| Cobaltkoritnigite | — | 3.44 | Co(AsO3OH)·H2O |
| Cobaltlotharmeyerite | — | 0.00 | CaCo2(AsO4)2·2H2O |
| Cobaltneustädtelite | — | 5.81 | Bi2Fe3+(Co,Fe3+)(AsO4)2(O,OH)4 |
| Cobalttsumcorite | — | 5.31 | PbCo2(AsO4)2·2H2O |
| Coiraite | — | 5.92 | (Pb,Sn2+)12.5As3Fe2+Sn4+5S28 |
| Colusite | — | 4.20 | Cu12VAs3S16 |
| Conichalcite | — | 4.10 | CaCuAsO4(OH) |
| Coparsite | — | 0.00 | Cu2+4O2AsO4Cl |
| Coralloite | — | 0.00 | Mn2+Mn3+2(AsO4)2(OH)2·4H2O |
| Cornubite | — | 4.00 | Cu5(AsO4)2(OH)4 |
| Cornwallite | — | 4.00 | Cu5(AsO4)2(OH)4 |
| Cupropearceite | — | 0.00 | [Cu6As2S7][Ag9CuS4] |
| Daliranite | — | 0.00 | PbHgAs2S6 |
| Dalnegroite | — | 0.00 | Tl4Pb2(As,Sb)20S34 |
| Daomanite | — | 7.03 | CuPtAsS2 |
| Davidlloydite | — | 3.66 | Zn3(AsO4)2·4H2O |
| Debattistiite | — | 0.00 | Ag9Hg0.5As6S12Te2 |
| Dervillite | — | 5.00 | Ag2AsS2 |
| Dienerite | — | 0.00 | Ni3As |
| Dimorphite | — | 3.58 | As4S3 |
| Dixenite | — | 4.20 | Cu1+Mn2+14Fe3+(As3+O3)5(SiO4)2(As5+O4)(OH)6 |
| Dmisokolovite | — | 4.26 | K3Cu5AlO2(AsO4)4 |
| Domerockite | — | 4.44 | Cu4(AsO4)(AsO3OH)(OH)3·H2O |
| Domeykite | — | 7.20 | Cu3As |
| Domeykite- | — | 0.00 | Cu3As |
| Dufrénoysite | — | 5.55 | Pb2As2S5 |
| Duftite | — | 6.00 | PbCuAsO4(OH) |
| Dugganite | — | 6.33 | Pb3Zn3(TeO6)(AsO4)2 |
| Durangite | — | 3.90 | NaAlAsO4F |
| Duranusite | — | 4.50 | As4S |
| Dussertite | — | 3.75 | BaFe3+3(AsO4)(AsO3OH)(OH)6 |
| Dymkovite | — | 0.00 | Ni(UO2)2(As3+O3)2·7H2O |
| Ecdemite | — | 6.90 | Pb6As3+2O7Cl4 |
| Eckerite | — | 0.00 | Ag2CuAsS3 |
| Ecrinsite | — | 0.00 | AgTl3Pb4As11Sb9S36 |
| Edenharterite | — | 5.00 | TlPbAs3S6 |
| Edtollite | — | 0.00 | K2NaCu5Fe3+O2(AsO4)4 |
| Ekatite | — | 0.00 | (Fe3+,Fe2+,Zn)12(AsO3)6(AsO3,SiO3OH)2(OH)6 |
| Ellisite | — | 7.10 | Tl3AsS3 |
| Enargite | — | 4.40 | Cu3AsS4 |
| Enneasartorite | — | 0.00 | Tl6Pb32As70S140 |
| Ericlaxmanite | — | 5.04 | Cu4O(AsO4)2 |
| Erikapohlite | — | 0.00 | Cu2+3(Zn,Cu,Mg)4Ca2(AsO4)6·2H2O |
| Erniggliite | — | 5.00 | Tl2SnAs2S6 |
| Erythrite | — | 2.95 | Co3(AsO4)2·8H2O |
| Esperanzaite | — | 3.24 | NaCa2Al2(AsO4)2F4(OH)·2H2O |
| Euchroite | — | 3.39 | Cu2AsO4(OH)·3H2O |
| Eurekadumpite | — | 3.83 | (Cu,Zn)16(Te4+O3)2(AsO4)3Cl(OH)18·7H2O |
| Eveite | — | 3.76 | Mn2+2AsO4(OH) |
| Fahleite | — | 2.10 | CaZn5Fe3+2(AsO4)6·14H2O |
| Fangite | — | 6.19 | Tl3AsS4 |
| Feinglosite | — | 6.52 | Pb2Zn(AsO4)2·H2O |
| Ferdowsiite | — | 5.30 | Ag8(Sb5As3)S16 |
| Ferrarisite | — | 2.63 | Ca5(AsO3OH)2(AsO4)2·9H2O |
| Ferrilotharmeyerite | — | 4.25 | CaZnFe3+(AsO4)2(OH)·H2O |
| Ferrisymplesite | — | 2.88 | Fe3+3(AsO4)2(OH)3·5H2O |
| Ferroskutterudite | — | 0.00 | FeAs3 |
| Ferrostalderite | — | 0.00 | CuFe2TlAs2S6 |
| Fetiasite | — | 4.60 | (Fe2+,Fe3+,Ti4+)3O2As3+2O5 |
| Fettelite | — | 6.29 | [Ag6As2S7][Ag10HgAs2S8] |
| Fianelite | — | 3.21 | Mn2+2V2O7·2H2O |
| Filatovite | — | 2.92 | K(Al,Zn)2(As,Si)2O8 |
| Finnemanite | — | 7.27 | Pb5(As3+O3)3Cl |
| Flinkite | — | 3.00 | Mn2+2Mn3+AsO4(OH)4 |
| Fluckite | — | 3.05 | CaMn2+(AsO3OH)2·2H2O |
| Forêtite | — | 3.29 | Cu2Al2(AsO4)(OH,O,H2O)6 |
| Fornacite | — | 6.27 | CuPb2(CrO4)(AsO4)(OH) |
| Freedite | — | 7.00 | Cu1+Pb8(As3+O3)2O3Cl5 |
| Freibergite | — | 4.85 | Ag6Cu4Fe2Sb4S13-x |
| Gabrielite | — | 5.38 | Tl2AgCu2As3S7 |
| Gabrielsonite | — | 6.67 | PbFeAsO4(OH) |
| Gaitite | — | 3.81 | Ca2Zn(AsO4)2·2H2O |
| Gajardoite | — | 2.68 | KCa0.5As3+4O6Cl2·5H2O |
| Galkhaite | — | 5.40 | (Hg5Cu)CsAs4S12 |
| Gallobeudantite | — | 4.58 | PbGa3(AsO4)(SO4)(OH)6 |
| Gartrellite | — | 5.00 | PbCuFe3+(AsO4)2(OH)·H2O |
| Gasparite-(Ce) | — | 0.00 | CeAsO4 |
| Gatewayite | — | 0.00 | Ca6(As3+V4+3V5+9As5+6O51)·31H2O |
| Gebhardite | — | 6.00 | Pb8As3+4O11Cl6 |
| Geigerite | — | 3.05 | Mn2+5(AsO4)2(AsO3OH)2·10H2O |
| Geminite | — | 3.70 | Cu2+(AsO3OH)·H2O |
| Geocronite | — | 6.40 | Pb14(Sb,As)6S23 |
| Georgiadesite | — | 6.30 | Pb4(As3+O3)Cl4(OH) |
| Gerdtremmelite | — | 3.00 | ZnAl2AsO4(OH)5 |
| Germanocolusite | — | 4.00 | Cu13VGe3S16 |
| Gersdorffite-P213 | — | 0.00 | NiAsS |
| Gersdorffite-Pa3 | — | 5.98 | NiAsS |
| Gersdorffite-Pca21 | — | 6.19 | NiAsS |
| Gerstleyite | — | 3.62 | Na2(Sb,As)8S13·2H2O |
| Getchellite | — | 3.92 | SbAsS3 |
| Gillulyite | — | 4.02 | Tl2As7.5Sb0.3S13 |
| Gilmarite | — | 0.00 | Cu2+3(AsO4)(OH)3 |
| Giraudite | — | 5.75 | Cu6[Cu4(Fe,Zn)2]As4Se13 |
| Glaucodot | — | 5.90 | Co0.5Fe0.5AsS |
| Goldfieldite | — | 4.95 | Cu10Te4S13 |
| Gottlobite | — | 3.41 | CaMg(VO4)(OH) |
| Goudeyite | — | 3.50 | Cu2+6Al(AsO4)3(OH)6·3H2O |
| Graeserite | — | 4.62 | Fe3+4Ti3As3+O13(OH) |
| Grandaite | — | 4.38 | Sr2Al(AsO4)2(OH) |
| Gratonite | — | 6.22 | Pb9As4S15 |
| Graulichite-(Ce) | — | 3.90 | CeFe3+3(AsO4)2(OH)6 |
| Grischunite | — | 3.80 | NaCa2Mn2+5Fe3+(As5+O4)6·2H2O |
| Guanacoite | — | 3.36 | Cu2Mg3(OH)4(AsO4)2·4H2O |
| Guérinite | — | 2.68 | Ca5(AsO3OH)2(AsO4)2·9H2O |
| Guettardite | — | 5.31 | PbSbAsS4 |
| Haidingerite | — | 2.95 | Ca(AsO3OH)·H2O |
| Hakite | — | 6.30 | Cu10Hg2Sb4Se13 |
| Hallimondite | — | 6.39 | Pb2(UO2)(AsO4)2·nH2O |
| Hatchite | — | 5.00 | AgPbTlAs2S5 |
| Hatertite | — | 4.06 | Na2(Ca,Na)(Fe3+,Cu)2(AsO4)3 |
| Hedyphane | — | 5.80 | Ca2Pb3(AsO4)3Cl |
| Heinrichite | — | 3.61 | Ba(UO2)2(AsO4)2·10H2O |
| Heliophyllite | — | 6.89 | Pb6As2O7Cl4 |
| Helmutwinklerite | — | 5.30 | PbZn2(AsO4)2·2H2O |
| Hematolite | — | 3.49 | (Mn2+,Mg,Al)15(AsO4)2(AsO3)(OH)23 |
| Hemloite | — | 4.00 | (Ti,V3+,Fe3+,Al)12As3+2O23(OH) |
| Hendekasartorite | — | 0.00 | Tl2Pb48As82S172 |
| Heptasartorite | — | 0.00 | Tl7Pb22As55S108 |
| Hereroite | — | 8.15 | [Pb32(O)21](AsO4)2[(Si,As,V,Mo)O4]2Cl10 |
| Hidalgoite | — | 3.96 | PbAl3(SO4)(AsO4)(OH)6 |
| Hilarionite | — | 2.49 | Fe3+2(SO4)(AsO4)(OH)·6H2O |
| Hloušekite | — | 3.30 | (Ni,Co)Cu4(AsO4)2(AsO3OH)2·9H2O |
| Holdenite | — | 4.11 | Mn2+6Zn3(AsO4)2(SiO4)(OH)8 |
| Hollingworthite | — | 7.91 | RhAsS |
| Holtite | — | 3.60 | (Ta0.60.4)Al6BSi3O18 |
| Honzaite | — | 0.00 | Ni2(AsO3OH)2·5H2O |
| Hörnesite | — | 2.57 | Mg3(AsO4)2·8H2O |
| Hügelite | — | 5.10 | Pb2(UO2)3(AsO4)2O2·5H2O |
| Hundholmenite-(Y) | — | 5.21 | (Y,REE,Ca,Na)15(Al,Fe3+)Cax(As3+)1-x(Si,As5+)Si6B3(O,F)48 |
| Hutchinsonite | — | 4.60 | TlPbAs5S9 |
| Hydroniumpharmacoalumite | — | 2.49 | (H3O)Al4(AsO4)3(OH)4·4.5H2O |
| Hydroniumpharmacosiderite | — | 0.00 | (H3O)Fe3+4(AsO4)3(OH)4·4H2O |
| Hydroroméite | — | 0.00 | (Ca,Mn)(Sb,W,As)2O6·4.2H2O |
| Ianbruceite | — | 3.20 | Zn2(AsO4)(OH)(H2O)·2H2O |
| Imhofite | — | 4.39 | Tl5.8As15.4S26 |
| Irarsite | — | 11.00 | IrAsS |
| Irhtemite | — | 3.09 | Ca4Mg(AsO4)2(AsO3OH)2·4H2O |
| Iridarsenite | — | 10.90 | IrAs2 |
| Isomertieite | — | 10.33 | Pd11Sb2As2 |
| Jamesite | — | 5.10 | Pb2ZnFe3+2(Fe3+,Zn)4(AsO4)4(OH)8(OH,O)2 |
| Jankovicite | — | 5.08 | Tl5Sb9(As,Sb)4S22 |
| Jarosewichite | — | 3.00 | Mn3+Mn2+3AsO4(OH)6 |
| Jasrouxite | — | 0.00 | Ag16Pb4(Sb25As15)S72 |
| Jentschite | — | 5.24 | TlPbAs2SbS6 |
| Joëlbruggerite | — | 6.73 | Pb3Zn3Sb5+As2O13(OH) |
| Johillerite | — | 4.15 | NaCuMg3(AsO4)3 |
| Johnbaumite | — | 3.65 | Ca5(AsO4)3OH |
| Johnbaumite-M | — | 3.41 | Ca5(AsO4)3OH |
| Johninnesite | — | 3.48 | Na2Mn2+9Mg7(AsO4)2(Si6O17)2(OH)8 |
| Jolliffeite | — | 7.10 | NiAsSe |
| Jordanite | — | 5.50 | Pb14(As,Sb)6S23 |
| Joteite | — | 3.06 | Ca2CuAl[AsO4][AsO3(OH)]2(OH)2·5H2O |
| Juabite | — | 4.59 | CaCu10(Te4+O3)4(AsO4)4(OH)2·4H2O |
| Juanitaite | — | 3.61 | (Cu,Ca,Fe)10Bi(AsO4)4(OH)11·2H2O |
| Juansilvaite | — | 3.01 | Na5Al3[AsO3(OH)]4[AsO2(OH)2]2(SO4)2·4H2O |
| Kaatialaite | — | 2.64 | Fe3+(H2AsO4)3·3H2O |
| Kahlerite | — | 3.00 | Fe2+(UO2)2(AsO4)2·12H2O |
| Kalgoorlieite | — | 0.00 | As2Te3 |
| Kalungaite | — | 7.59 | PdAsSe |
| Kamarizaite | — | 3.12 | Fe3+3(AsO4)2(OH)3·3H2O |
| Kankite | — | 2.70 | Fe3+AsO4·3.5H2O |
| Karibibite | — | 4.07 | Fe3+2As3+4O9 |
| Katiarsite | — | 3.49 | KTiO(AsO4) |
| Kegginite | — | 0.00 | Pb3Ca3[AsV12O40(VO)]·20H2O |
| Kemmlitzite | — | 3.63 | SrAl3(AsO4)(SO4)(OH)6 |
| Keutschite | — | 0.00 | Cu2AgAsS4 |
| Keyite | — | 4.95 | Cu2+3Zn4Cd2(AsO4)6·2H2O |
| Kirkiite | — | 6.00 | Pb10Bi3As3S19 |
| Klajite | — | 3.21 | MnCu4(AsO4)2(AsO3OH)2·9H2O |
| Kolfanite | — | 3.30 | Ca2Fe3+3O2(AsO4)3·2H2O |
| Kolicite | — | 4.17 | Zn4Mn2+7(AsO4)2(SiO4)2(OH)8 |
| Kolitschite | — | 4.67 | Pb[Zn0.50.5]Fe3+3(AsO4)2(OH)6 |
| Koritnigite | — | 3.54 | Zn(AsO3OH)·H2O |
| Köttigite | — | 3.33 | Zn3(AsO4)2·8H2O |
| Koutekite | — | 8.48 | Cu5As2 |
| Kozyrevskite | — | 4.93 | Cu4O(AsO4)2 |
| Kraisslite | — | 3.88 | Zn3(Mn,Mg)25(Fe3+,Al)(As3+O3)2[(Si,As5+)O4]10(OH)16 |
| Krautite | — | 3.30 | Mn(AsO3OH)·H2O |
| Krettnichite | — | 4.50 | PbMn3+2(VO4)2(OH)2 |
| Krutovite | — | 7.00 | NiAs2 |
| Kutinaite | — | 8.38 | Ag6Cu14As7 |
| Kuznetsovite | — | 8.64 | Hg1+2Hg2+(AsO4)Cl |
| Laffittite | — | 6.07 | AgHgAsS3 |
| Lammerite | — | 5.18 | Cu3(AsO4)2 |
| Lammerite- | — | 0.00 | Cu3(AsO4)2 |
| Långbanshyttanite | — | 0.00 | Pb2Mn2Mg(AsO4)2(OH)4·6H2O |
| Langisite | — | 8.17 | CoAs |
| Lapeyreite | — | 4.39 | Cu3O[AsO3(OH)]2·H2O |
| Laphamite | — | 4.50 | As2Se3 |
| Launayite | — | 5.75 | CuPb10(Sb,As)13S30 |
| Lautite | — | 4.90 | CuAsS |
| Lavendulan | — | 3.54 | NaCaCu5(AsO4)4Cl·5H2O |
| Lazarenkoite | — | 3.45 | CaFe3+As3+3O7·3H2O |
| Legrandite | — | 4.00 | Zn2AsO4(OH)·H2O |
| Leiteite | — | 4.31 | ZnAs3+2O4 |
| Lemanskiite | — | 3.78 | NaCaCu5(AsO4)4Cl·5H2O |
| Lengenbachite | — | 5.80 | Ag4Cu2Pb18As12S39 |
| Leogangite | — | 3.55 | Cu10(AsO4)4SO4(OH)6·8H2O |
| Lindackerite | — | 3.35 | Cu5(AsO4)2(AsO3OH)2·9H2O |
| Liroconite | — | 2.90 | Cu2AlAsO4(OH)4·4H2O |
| Liskeardite | — | 3.10 | (Al,Fe)32(AsO4)18(OH)42(H2O)22·52H2O |
| Liveingite | — | 5.30 | Pb18.5As25S56 |
| Löllingite | — | 7.10 | FeAs2 |
| Lopatkaite | — | 0.00 | Pb5Sb3AsS11 |
| Lorándite | — | 5.53 | TlAsS2 |
| Lotharmeyerite | — | 4.23 | CaZn2(AsO4)2·2H2O |
| Lucabindiite | — | 3.68 | (K,NH4)As4O6(Cl,Br) |
| Ludlockite | — | 4.35 | PbFe3+4As3+10O22 |
| Luetheite | — | 4.28 | Cu2Al2(AsO4)2(OH)4·H2O |
| Lukrahnite | — | 4.18 | Ca(Cu,Zn)(Fe3+,Zn)(AsO4)2(OH,H2O)2 |
| Luzonite | — | 4.40 | Cu3AsS4 |
| Machatschkiite | — | 2.50 | Ca6(AsO4)(AsO3OH)3PO4·15H2O |
| Madocite | — | 5.98 | Pb18(Sb,As)15S41 |
| Maghrebite | — | 0.00 | MgAl2(AsO4)2(OH)2·8H2O |
| Magnesiochlorophoenicite | — | 3.37 | Mg3Zn2AsO4(OH,O)6 |
| Magnesiokoritnigite | — | 2.94 | Mg(AsO3OH)·H2O |
| Magnussonite | — | 4.30 | Mn2+10As3+6O18(OH,Cl)2 |
| Mahnertite | — | 3.14 | (Na,Ca,K)Cu3(AsO4)2Cl·5H2O |
| Maikainite | — | 4.45 | Cu10Fe3MoGe3S16 |
| Majakite | — | 9.33 | PdNiAs |
| Mallestigite | — | 0.00 | Pb3Sb(SO4)(AsO4)(OH)6·3H2O |
| Manganarsite | — | 3.64 | Mn2+3As3+2O4(OH)4 |
| Manganberzeliite | — | 4.21 | NaCa2Mn2+2(AsO4)3 |
| Manganlotharmeyerite | — | 3.77 | CaMn3+2(AsO4)2(OH)2 |
| Manganohörnesite | — | 2.64 | Mn2+3(AsO4)2·8H2O |
| Manganoquadratite | — | 0.00 | AgMnAsS3 |
| Manganostibite | — | 4.95 | Mn2+7Sb5+As5+O12 |
| Mansfieldite | — | 3.03 | AlAsO4·2H2O |
| Mapimite | — | 2.95 | Zn2Fe3+3(AsO4)3(OH)4·10H2O |
| Marcobaldiite | — | 0.00 | Pb12(Sb3As2Bi)S21 |
| Marrite | — | 6.23 | AgPbAsS3 |
| Marumoite | — | 0.00 | Pb8As10S23 |
| Maucherite | — | 7.83 | Ni11As8 |
| Mawbyite | — | 5.50 | PbFe3+2(AsO4)2(OH)2 |
| Maxwellite | — | 3.90 | NaFe3+AsO4F |
| Mcgovernite | — | 3.72 | Mn19Zn3(AsO3)(AsO4)3(SiO4)3(OH)21 |
| Mcnearite | — | 2.60 | NaCa5(AsO4)(AsO3OH)4·4H2O |
| Medaite | — | 3.70 | Mn2+6V5+Si5O18(OH) |
| Medenbachite | — | 5.90 | Bi2Fe3+Cu2+(AsO4)2O(OH)3 |
| Meerschautite | — | 5.92 | (Ag,Cu)5.5Pb42.4(Sb,As)45.1S112O0.8 |
| Melanarsite | — | 4.39 | K3Cu7Fe3+O4(AsO4)4 |
| Menchettiite | — | 5.15 | Pb5Mn3Ag2Sb6As4S24 |
| Menshikovite | — | 10.65 | Pd3Ni2As3 |
| Mertieite-I | — | 10.60 | Pd5+x(Sb,As)2-x (x=0.1-0.2) |
| Mertieite-II | — | 11.29 | Pd8(Sb,As)3 |
| Metaheinrichite | — | 4.04 | Ba(UO2)2(AsO4)2·8H2O |
| Metakahlerite | — | 3.48 | Fe2+(UO2)2(AsO4)2·8H2O |
| Metakirchheimerite | — | 3.20 | Co(UO2)2(AsO4)2·8H2O |
| Metaköttigite | — | 3.00 | (Zn,Fe3+)3(AsO4)2·8(H2O,OH) |
| Metalodèvite | — | 4.00 | Zn(UO2)2(AsO4)2·10H2O |
| Metanovácekite | — | 3.51 | Mg(UO2)2(AsO4)2·4-8H2O |
| Metarauchite | — | 3.81 | Ni(UO2)2(AsO4)2·8H2O |
| Metauranospinite | — | 3.95 | Ca(UO2)2(AsO4)2·8H2O |
| Metazeunerite | — | 3.64 | Cu(UO2)2(AsO4)2·8H2O |
| Mgriite | — | 4.00 | (Cu,Fe)3AsSe3 |
| Miguelromeroite | — | 0.00 | Mn5(AsO4)2(AsO3OH)2·4H2O |
| Mimetite | — | 7.10 | Pb5(AsO4)3Cl |
| Mimetite-M | — | 7.37 | Pb5(AsO4)3Cl |
| Mixite | — | 3.80 | Cu2+6Bi(AsO4)3(OH)6·3H2O |
| Modderite | — | 8.00 | CoAs |
| Molybdofornacite | — | 6.60 | CuPb2MoO4AsO4(OH) |
| Morelandite | — | 5.32 | Ca2Ba3(AsO4)3Cl |
| Morrisonite | — | 0.00 | Ca11(As3+V4+2V5+10As5+6O51)2·78H2O |
| Mutnovskite | — | 6.18 | Pb2AsS3I |
| Nabiasite | — | 0.00 | BaMn9(VO4)6(OH)2 |
| Nanlingite | — | 3.93 | NaCa5LiMg12(AsO3)2[Fe2+(AsO3)6]F14 |
| Natropharmacoalumite | — | 2.56 | NaAl4(AsO4)3(OH)4·4H2O |
| Natropharmacosiderite | — | 2.79 | Na2Fe3+4(AsO4)3(OH)5·7H2O |
| Natrouranospinite | — | 3.85 | Na2(UO2)2(AsO4)2·5H2O |
| Nealite | — | 5.88 | Pb4Fe(AsO3)2Cl4·2H2O |
| Nekrasovite | — | 4.62 | Cu13VSn3S16 |
| Nelenite | — | 3.46 | Mn2+16As3+3Si12O36(OH)17 |
| Neustädtelite | — | 5.81 | Bi2Fe3+(Fe3+,Co)2(AsO4)2(O,OH)4 |
| Nickelaustinite | — | 4.30 | CaNiAsO4(OH) |
| Nickeline | — | 7.78 | NiAs |
| Nickellotharmeyerite | — | 4.45 | CaNi2(AsO4)2·2H2O |
| Nickelschneebergite | — | 5.23 | BiNi2(AsO4)2(OH)·H2O |
| Nickelskutterudite | — | 6.50 | NiAs3-x |
| Nickeltalmessite | — | 3.74 | Ca2Ni(AsO4)2·2H2O |
| Nickeltsumcorite | — | 5.02 | Pb(Ni,Fe3+)2(AsO4)2(H2O,OH)2 |
| Nickenichite | — | 4.00 | (Na,Ca,Cu)1.6(Mg,Fe3+,Al)3(AsO4)3 |
| Nielsbohrite | — | 5.45 | K(UO2)3AsO4(OH)4·H2O |
| Novácekite-I | — | 0.00 | Mg(UO2)2(AsO4)2·12H2O |
| Novácekite-II | — | 3.27 | Mg(UO2)2(AsO4)2·9H2O |
| Novákite | — | 6.70 | (Cu,Ag)21As10 |
| Nowackiite | — | 4.00 | Cu6Zn3As4S12 |
| Nyholmite | — | 4.23 | Cd3Zn2(AsO4)2(AsO3OH)2·4H2O |
| O'Danielite | — | 4.00 | H2NaZn3(AsO4)3 |
| Obradovicite-KCu | — | 3.68 | [K2(H2O)17Cu2+(H2O)6][Mo6+8As2Fe3+3O34(OH)3] |
| Obradovicite-NaCu | — | 0.00 | [Na2(H2O)17Cu2+(H2O)6][Mo6+8As2Fe3+3O34(OH)3] |
| Obradovicite-NaNa | — | 0.00 | [Na2(H2O)16Na(H2O)6][Mo6+8As2Fe3+3O33(OH)4] |
| Oenite | — | 7.92 | CoSbAs |
| Ogdensburgite | — | 2.92 | Ca2Fe3+4Zn(AsO4)4(OH)6·6H2O |
| Ojuelaite | — | 3.39 | ZnFe3+2(AsO4)2(OH)2·4H2O |
| Okruschite | — | 3.33 | Ca2Mn2+5Be4(AsO4)6(OH)4·6H2O |
| Olivenite | — | 4.10 | Cu2AsO4(OH) |
| Omeiite | — | 11.20 | OsAs2 |
| Ondrušite | — | 0.00 | CaCu4(AsO4)2(AsO3OH)2·10H2O |
| Orcelite | — | 7.50 | Ni5-xAs2 (x=0.23) |
| Oregonite | — | 6.92 | FeNi2As2 |
| Orpiment | — | 3.49 | As2S3 |
| Orthowalpurgite | — | 6.50 | (UO2)Bi4O4(AsO4)2·2H2O |
| Osarsite | — | 8.44 | OsAsS |
| Ovamboite | — | 4.74 | Cu10Fe3WGe3S16 |
| Ozerovaite | — | 0.00 | Na2KAl3(AsO4)4 |
| Pääkkönenite | — | 5.21 | Sb2AsS2 |
| Packratite | — | 0.00 | Ca11(As3+V5+10V4+2As5+6O51)2·83H2O |
| Paganoite | — | 0.00 | NiBi3+OAsO4 |
| Palarstanide | — | 10.00 | Pd5(Sn,As)2 |
| Palenzonaite | — | 3.63 | NaCa2Mn2+2(VO4)3 |
| Palladoarsenide | — | 10.42 | Pd2As |
| Palladobismutharsenide | — | 10.86 | Pd2(As,Bi) |
| Palladodymite | — | 0.00 | Pd2As |
| Parabrandtite | — | 3.55 | Ca2Mn2+(AsO4)2·2H2O |
| Paradamite | — | 4.55 | Zn2AsO4(OH) |
| Paradocrasite | — | 6.52 | Sb3As |
| Paraniite-(Y) | — | 0.00 | (Ca,Y,Dy)2Y(WO4)2AsO4 |
| Parapierrotite | — | 5.04 | TlSb5S8 |
| Pararammelsbergite | — | 7.20 | NiAs2 |
| Pararealgar | — | 3.52 | As4S4 |
| Pararsenolamprite | — | 5.88 | As |
| Parascorodite | — | 3.21 | Fe3+AsO4·2H2O |
| Parasterryite | — | 0.00 | Ag4Pb20Sb14As10S58 |
| Parasymplesite | — | 3.07 | Fe2+3(AsO4)2·8H2O |
| Parnauite | — | 3.09 | Cu9(AsO4)2(SO4)(OH)10·7H2O |
| Parwelite | — | 4.62 | Mn2+10Sb5+2As5+2Si2O24 |
| Paulmooreite | — | 6.95 | Pb2As3+2O5 |
| Paxite | — | 5.30 | CuAs2 |
| Pearceite | — | 6.15 | Cu(Ag,Cu)6Ag9As2S11 |
| Penberthycroftite | — | 2.18 | [Al6(AsO4)3(OH)9(H2O)5]·8H2O |
| Petewilliamsite | — | 4.90 | (Ni,Co)30(As2O7)15 |
| Pharmacoalumite | — | 2.68 | KAl4(AsO4)3(OH)4·6.5H2O |
| Pharmacolite | — | 2.60 | Ca(AsO3OH)·2H2O |
| Pharmacosiderite | — | 2.80 | KFe3+4(AsO4)3(OH)4·6-7H2O |
| Pharmazincite | — | 0.00 | KZnAsO4 |
| Phaunouxite | — | 2.28 | Ca3(AsO4)2·11H2O |
| Philipsbornite | — | 4.33 | PbAl3(AsO4)(AsO3OH)(OH)6 |
| Philipsburgite | — | 4.07 | (Cu,Zn)6(AsO4,PO4)2(OH)6·H2O |
| Philrothite | — | 0.00 | TlAs3S5 |
| Phosphohedyphane | — | 5.92 | Ca2Pb3(PO4)3Cl |
| Phosphowalpurgite | — | 4.59 | (UO2)Bi4O4(PO4)2·2H2O |
| Picropharmacolite | — | 2.58 | Ca4Mg(AsO3OH)2(AsO4)2·11H2O |
| Pierrotite | — | 4.97 | TlSb3As2S8 |
| Písekite-(Y) | — | 4.03 | (Y,As,Ca,Fe,U)(Nb,Ti,Ta)O4 |
| Pitticite | — | 2.50 | [Fe,AsO4,SO4,H2O](?) |
| Platarsite | — | 8.00 | PtAsS |
| Playfairite | — | 5.80 | Pb16(Sb,As)19S44Cl |
| Plumboagardite | — | 3.74 | Cu2+6(Pb,La,Nd,Ce,Ca)(AsO4)3(OH)6·3H2O |
| Polkanovite | — | 10.22 | Rh12As7 |
| Polloneite | — | 0.00 | AgPb46As26Sb23S120 |
| Polybasite | — | 4.60 | Cu(Ag,Cu)6Ag9Sb2S11 |
| Popovite | — | 5.30 | Cu5O2(AsO4)2 |
| Pradetite | — | 3.31 | CoCu4(AsO4)2(AsO3OH)2·9H2O |
| Preisingerite | — | 7.24 | Bi3O(AsO4)2(OH) |
| Proshchenkoite-(Y) | — | 4.72 | (Y,REE,Ca,Na,Mn)15CaFe2+(P,Si)Si6B3O34F14 |
| Prosperite | — | 4.31 | Ca2Zn4(AsO4)4·H2O |
| Protochabournéite | — | 0.00 | Tl5-xPb2x(Sb,As)21-xS34 (x~1.2-1.5) |
| Proustite | — | 5.50 | Ag3AsS3 |
| Pushcharovskite | — | 3.35 | K0.6Cu18[AsO2(OH)2]4[AsO3OH]10(AsO4)(OH)9.6·18.6H2O |
| Quadratite | — | 0.00 | Ag(Cd,Pb)AsS3 |
| Raadeite | — | 2.81 | Mg7(PO4)2(OH)8 |
| Raberite | — | 0.00 | Tl5Ag4As6SbS15 |
| Radovanite | — | 3.90 | Cu2Fe3+(AsO4)(AsO2(OH))2·H2O |
| Ralphcannonite | — | 0.00 | AgZn2TlAs2S6 |
| Rammelsbergite | — | 7.10 | NiAs2 |
| Rappoldite | — | 0.00 | PbCo2(AsO4)2·2H2O |
| Rathite | — | 5.41 | Ag2Pb12-xTlx/2As18+x/2S40 |
| Rathite-IV | — | 0.00 | Pb3As5S10 |
| Rauchite | — | 3.43 | Ni(UO2)2(AsO4)2·10H2O |
| Rauenthalite | — | 2.36 | Ca3(AsO4)2·10H2O |
| Realgar | — | 3.56 | AsS |
| Rebulite | — | 4.81 | Tl5Sb5As8S22 |
| Reinerite | — | 4.27 | Zn3(As3+O3)2 |
| Renierite | — | 4.38 | (Cu1+,Zn)11Fe4(Ge4+,As5+)2S16 |
| Reppiaite | — | 3.00 | Mn2+5(VO4)2(OH)4 |
| Retzian-(Ce) | — | 4.45 | Mn2+2CeAsO4(OH)4 |
| Retzian-(La) | — | 4.49 | Mn2+2LaAsO4(OH)4 |
| Retzian-(Nd) | — | 4.45 | Mn2+2Nd(AsO4)(OH)4 |
| Rhodarsenide | — | 11.27 | Rh2As |
| Richelsdorfite | — | 3.20 | Ca2Cu5Sb5+(AsO4)4(OH)6Cl·6H2O |
| Rollandite | — | 3.90 | Cu3(AsO4)2·4H2O |
| Rooseveltite | — | 6.86 | BiAsO4 |
| Roselite | — | 3.69 | Ca2Co(AsO4)2·2H2O |
| Roselite- | — | 3.71 | Ca2Co(AsO4)2·2H2O |
| Roshchinite | — | 5.27 | (Ag,Cu)19Pb10Sb51S96 |
| Rösslerite | — | 1.93 | Mg(AsO3OH)·7H2O |
| Rouseite | — | 4.20 | Pb2Mn2+(AsO3)2·2H2O |
| Routhierite | — | 5.83 | CuTlHg2As2S6 |
| Rruffite | — | 3.77 | Ca2Cu(AsO4)2·2H2O |
| Ruarsite | — | 7.00 | RuAsS |
| Russoite | — | 0.00 | (NH4)ClAs2O3(H2O)0.5 |
| Ruthenarsenite | — | 10.00 | (Ru,Ni)As |
| Sabelliite | — | 4.65 | Cu2ZnAsO4(OH)3 |
| Safflorite | — | 6.90 | CoAs2 |
| Sahlinite | — | 8.00 | Pb14O9(AsO4)2Cl4 |
| Sailaufite | — | 0.00 | (Ca,Na)2Mn3+3O2(AsO4)2CO3·3H2O |
| Sainfeldite | — | 3.04 | Ca5(AsO4)2(AsO3OH)2·4H2O |
| Santafeite | — | 3.38 | (Ca,Sr,Na)3(Mn2+,Fe3+)2Mn4+2(VO4)4(OH,O)5·2H2O |
| Sarkinite | — | 4.08 | Mn2+2AsO4(OH) |
| Sarmientite | — | 2.58 | Fe3+2(AsO4)(SO4)(OH)·5H2O |
| Sartorite | — | 5.10 | PbAs2S4 |
| Schallerite | — | 3.37 | Mn2+16As3+3Si12O36(OH)17 |
| Scheuchzerite | — | 3.47 | NaMn2+9Si9V5+O28(OH)4 |
| Schlegelite | — | 7.23 | Bi7O4(MoO4)2(AsO4)3 |
| Schlossmacherite | — | 3.00 | (H3O)Al3(SO4)2(OH)6 |
| Schneebergite | — | 5.28 | BiCo2(AsO4)2(OH)·H2O |
| Schneiderhöhnite | — | 4.30 | Fe2+Fe3+3As3+5O13 |
| Schultenite | — | 5.94 | Pb(AsO3OH) |
| Schumacherite | — | 6.90 | Bi3O(VO4)2(OH) |
| Scorodite | — | 3.10 | Fe3+AsO4·2H2O |
| Seelite | — | 3.00 | Mg(UO2)2(AsO3,AsO4)2·7H2O |
| Segerstromite | — | 0.00 | Ca3(As5+O4)2(As3+(OH)3)2 |
| Segnitite | — | 4.00 | PbFe3+3AsO4(AsO3OH)(OH)6 |
| Seinäjokite | — | 0.00 | FeSb2 |
| Selenopolybasite | — | 0.00 | Cu(Ag,Cu)6Ag9Sb2(S,Se)9Se2 |
| Seligmannite | — | 5.38 | CuPbAsS3 |
| Sewardite | — | 0.00 | CaFe3+2(AsO4)2(OH)2 |
| Shchurovskyite | — | 4.28 | K2CaCu6O2(AsO4)4 |
| Shubnikovite | — | 0.00 | Ca2Cu2+8(AsO4)6Cl(OH)·7H2O(?) |
| Sicherite | — | 0.00 | TlAg2(As,Sb)3S6 |
| Simonite | — | 0.00 | TlHgAs3S6 |
| Sinnerite | — | 5.20 | Cu6As4S9 |
| Skutterudite | — | 6.50 | (Co,Ni,Fe)As3 |
| Slavkovite | — | 3.05 | Cu13(AsO4)6(AsO3OH)4·23H2O |
| Smithite | — | 4.90 | AgAsS2 |
| Smolyaninovite | — | 0.00 | Co3Fe3+2(AsO4)4·11H2O |
| Sorbyite | — | 5.52 | Pb9Cu(Sb,As)11S26 |
| Spaltiite | — | 0.00 | Tl2Cu2As2S5 |
| Sperrylite | — | 10.58 | PtAs2 |
| Spryite | — | 0.00 | Ag8(As3+0.5As5+0.5)S6 |
| Stalderite | — | 4.97 | TlCu(Zn,Fe,Hg)2As2S6 |
| Stenhuggarite | — | 4.63 | CaFe3+Sb3+As3+2O7 |
| Štepite | — | 3.90 | U(AsO3OH)2·4H2O |
| Sterlinghillite | — | 2.95 | Mn2+3(AsO4)2·3H2O |
| Sterryite | — | 6.00 | (Ag,Cu)2Pb10(Sb,As)12S29 |
| Stibarsen | — | 6.10 | SbAs |
| Stibioclaudetite | — | 0.00 | AsSbO3 |
| Stibiocolusite | — | 4.00 | Cu13V(Sb,Sn,As)3S16 |
| Stillwaterite | — | 10.40 | Pd8As3 |
| Stranskiite | — | 5.23 | CuZn2(AsO4)2 |
| Strashimirite | — | 3.80 | Cu4(AsO4)2(OH)2·2.5H2O |
| Strontiopharmacosiderite | — | 0.00 | Sr0.5Fe4[(AsO4)3(OH)4]·4H2O |
| Suredaite | — | 5.54 | PbSnS3 |
| Svabite | — | 3.50 | Ca5(AsO4)3F |
| Švenekite | — | 3.26 | Ca(AsO2(OH)2)2 |
| Symplesite | — | 2.96 | Fe2+3(AsO4)2·8H2O |
| Synadelphite | — | 3.57 | Mn2+9(AsO4)2(AsO3)(OH)9·2H2O |
| Szklaryite | — | 3.71 | Al6BAs3+3O15 |
| Talmessite | — | 3.20 | Ca2Mg(AsO4)2·2H2O |
| Tangdanite | — | 3.32 | Ca2Cu9(AsO4)4(SO4)0.5(OH)9·9H2O |
| Tapiaite | — | 2.68 | Ca5Al2(AsO4)4(OH)4·12H2O |
| Tazieffite | — | 6.07 | Pb20Cd2(As,Bi)22S50Cl10 |
| Tennantite | — | 4.60 | Cu12As4S13 |
| Teruggite | — | 2.15 | Ca4Mg[AsB6O11(OH)6]2·14H2O |
| Tetrarooseveltite | — | 7.00 | BiAsO4 |
| Thalliumpharmacosiderite | — | 0.00 | TlFe4[(AsO4)3(OH)4]·4H2O |
| Theisite | — | 4.30 | Cu5Zn5As2O8(OH)14 |
| Theoparacelsite | — | 4.72 | Cu3(OH)2As2O7 |
| Thometzekite | — | 0.00 | PbCu2+2(AsO4)2·2H2O |
| Thorikosite | — | 7.24 | Pb3O3Sb3+(OH)Cl2 |
| Tilasite | — | 3.77 | CaMgAsO4F |
| Tillmannsite | — | 7.73 | HgAg3VO4 |
| Tiragalloite | — | 3.84 | Mn2+4As5+Si3O12(OH) |
| Tomichite | — | 4.16 | V3+4Ti4+3As3+O13(OH) |
| Tooeleite | — | 4.24 | Fe3+6(AsO3)4SO4(OH)4·4H2O |
| Törnroosite | — | 11.21 | Pd11As2Te2 |
| Torrecillasite | — | 4.06 | Na(As3+,Sb3+)4O6Cl |
| Trechmannite | — | 4.78 | AgAsS2 |
| Trigonite | — | 6.10 | Pb3Mn2+(As3+O3)2(As3+O2OH) |
| Trippkeite | — | 4.80 | Cu2+As3+2O4 |
| Trögerite | — | 3.55 | (H3O)(UO2)(AsO4)·3H2O |
| Tsugaruite | — | 0.00 | Pb4As2S7 |
| Tsumcorite | — | 5.20 | PbZn2(AsO4)2·2H2O |
| Turneaureite | — | 3.60 | Ca5(AsO4)3Cl |
| Turtmannite | — | 3.60 | Mn25O5(VO4)3(SiO4)3(OH)20 |
| Tvalchrelidzeite | — | 7.38 | Hg3SbAsS3 |
| Twinnite | — | 5.26 | PbSb2S4 |
| Tyrolite | — | 3.10 | Ca2Cu9(AsO4)4(CO3)(OH)8·11H2O |
| Ungavaite | — | 7.26 | Pd4Sb3 |
| Uramarsite | — | 3.22 | NH4(UO2)AsO4·3H2O |
| Uranospinite | — | 3.45 | Ca(UO2)2(AsO4)2·10H2O |
| Urusovite | — | 0.00 | CuAlO(AsO4) |
| Uzonite | — | 3.37 | As4S5 |
| Vajdakite | — | 3.50 | (Mo6+O2)2As3+2O5·3H2O |
| Vanackerite | — | 7.28 | Pb4Cd(AsO4)3(Cl,OH) |
| Vanarsite | — | 0.00 | NaCa12(As3+V5+8.5V4+3.5As5+6O51)2·78H2O |
| Vasilseverginite | — | 0.00 | Cu9O4(AsO4)2(SO4)2 |
| Veenite | — | 5.92 | Pb2(Sb,As)2S5 |
| Versiliaite | — | 5.12 | (Fe2+,Fe3+,Zn)8(Sb3+,Fe3+,As)16O32S1.3 |
| Veselovskýite | — | 3.28 | ZnCu4(AsO4)2(AsO3OH)2·9H2O |
| Vicanite-(Ce) | — | 4.73 | (Ca,Ce,La,Th)15As5+(As3+,Na)0.5Fe3+0.7Si6B4(O,F)47 |
| Villyaellenite | — | 3.20 | (Mn,Ca)Mn2+2Ca2(AsO4)2(AsO3OH)2·4H2O |
| Vincentite | — | 6.82 | Pd3As |
| Vinciennite | — | 4.29 | Cu10Fe4SnAsS16 |
| Vladimirite | — | 3.14 | Ca4(AsO4)2(AsO3OH)·4H2O |
| Vozhminite | — | 6.20 | Ni4AsS2 |
| Vrbaite | — | 5.30 | Hg3Tl4As8Sb2S20 |
| Vurroite | — | 6.15 | Pb20Sn2(Bi,As)22S54Cl6 |
| Vysokýite | — | 3.34 | U4+[AsO2(OH)2]4·4H2O |
| Wakabayashilite | — | 3.98 | (As,Sb)6As4S14 |
| Walentaite | — | 2.72 | H2Ca2Fe3+6(AsO4)5(PO4)3·14H2O |
| Wallisite | — | 5.00 | CuPbTlAs2S5 |
| Wallkilldellite | — | 2.85 | Ca4Mn2+6(AsO4)4(OH)8·18H2O |
| Wallkilldellite-(Fe) | — | 3.00 | (Ca,Cu)4Fe6(AsO4,SiO4)4(OH)8·18H2O |
| Walpurgite | — | 5.95 | Bi4O4(UO2)(AsO4)2·2H2O |
| Warikahnite | — | 4.24 | Zn3(AsO4)2·2H2O |
| Watanabeite | — | 4.66 | Cu4As2S5 |
| Waterhouseite | — | 3.59 | Mn7(PO4)2(OH)8 |
| Weilerite | — | 0.00 | BaAl3(SO4)(AsO4)(OH)6 |
| Weilite | — | 3.48 | Ca(AsO3OH) |
| Welshite | — | 3.77 | Ca4(Mg9Sb5+3)O4[Si6Be3AlFe3+2O36] |
| Wendwilsonite | — | 3.52 | Ca2Mg(AsO4)2·2H2O |
| Westerveldite | — | 8.00 | FeAs |
| Whitecapsite | — | 2.30 | H16Fe2+5Fe3+14Sb3+6(AsO4)18O16·120H2O |
| Wiklundite | — | 4.07 | Pb2(Mn2+,Zn)3(Fe3+,Mn2+)2(Mn2+,Mg)19(As3+O3)2(Si,As5+O4)6(OH)18Cl6 |
| Wilhelmkleinite | — | 4.34 | ZnFe3+2(AsO4)2(OH)2 |
| Wrightite | — | 0.00 | K2Al2O(AsO4)2 |
| Xanthiosite | — | 5.37 | Ni3(AsO4)2 |
| Xanthoconite | — | 5.50 | Ag3AsS3 |
| Yancowinnaite | — | 5.31 | PbCuAl(AsO4)2OH·H2O |
| Yanomamite | — | 3.87 | InAsO4·2H2O |
| Yazganite | — | 4.19 | NaMgFe3+2(AsO4)3·H2O |
| Yukonite | — | 2.80 | Ca7Fe3+15(AsO4)9O16·25H2O |
| Yurmarinite | — | 4.00 | Na7(Fe3+,Mg,Cu)4(AsO4)6 |
| Yvonite | — | 3.20 | Cu(AsO3OH)·2H2O |
| Zaccariniite | — | 0.00 | RhNiAs |
| Zálesíite | — | 3.49 | Cu2+6Ca(AsO4)2(AsO3OH)(OH)6·3H2O |
| Zdenekite | — | 4.10 | NaPbCu5(AsO4)4Cl·5H2O |
| Zeunerite | — | 3.20 | Cu(UO2)2(AsO4)2·12H2O |
| Zimbabweite | — | 6.20 | Na(Pb,Na,K)2(Ta,Nb,Ti)4As4O18 |
| Zincgartrellite | — | 0.00 | PbZn2(AsO4)2(H2O,OH)2 |
| Zinclipscombite | — | 3.65 | ZnFe3+2(PO4)2(OH)2 |
| Zincolivenite | — | 4.34 | CuZnAsO4(OH) |
| Zincroselite | — | 3.75 | Ca2Zn(AsO4)2·2H2O |
| Zýkaite | — | 2.50 | Fe3+4(AsO4)3SO4(OH)·15H2O |