Mineraller

Aspidolite

NaMg3(Si3Al)O10(OH)2

Asselbornite

Pb(UO2)4(BiO)3(AsO4)2(OH)7·4H2O

Astrophyllite

K2NaFe2+7Ti2(Si4O12)2O2(OH)4F

Atencioite

Ca2Fe2+3Mg2Be4(PO4)6(OH)4·6H2O

Athabascaite

Cu5Se4

Atheneite

Pd2(As0.75Hg0.25)

Aschamalmite

Pb6-3xBi2+xS9

Ashburtonite

HCu4Pb4Si4O12(HCO3)4(OH)4Cl

Laptevite-(Ce)

NaFe2+(REE7Ca5Y3)(SiO4)4(Si3B2PO18)(BO3)F11

Murchisite

Cr5S6

Tuperssuatsiaite

Na2(Fe3+,Mn2+)3Si8O20(OH)2·4H2O

Attikaite

Ca3Cu2Al2(AsO4)4(OH)4·2H2O

Aurichalcite

(Zn,Cu)5(CO3)2(OH)6

Aurihydrargyrumite

Au6Hg5

Aurivilliusite

Hg1+Hg2+OI

Auropearceite

[Ag9AuS4][Ag6As2S7]

Aurorite

Mn2+Mn4+3O7·3H2O

Auroselenide

AuSe

Aurostibite

AuSb2

Austinite

CaZn(AsO4)(OH)

Ginorite

Ca2B14O20(OH)6·5H2O

Leifite

Na7Be2(Si15Al3)O39(F,OH)2

Atlasovite

Cu2+6Fe3+Bi3+O4(SO4)5·KCl

Aubertite

Cu2+Al(SO4)2Cl·14H2O

Augelite

Al2(PO4)(OH)3

Augite

(Ca,Mg,Fe)2Si2O6

Turanite

Cu2+5(VO4)2(OH)4

Axelite

Na14Cu7(AsO4)8F2Cl2

Axinite-(Fe)

Ca4Fe2+2Al4[B2Si8O30](OH)2

Axinite-(Mg)

Ca4Mg2Al4[B2Si8O30](OH)2

Axinite-(Mn)

Ca4Mn2+2Al4[B2Si8O30](OH)2

Azoproite

Mg2[(Ti,Mg),Fe3+]O2(BO3)

Babánekite

Cu3(AsO4)2·8H2O

Chenzhangruite

MnFe2+Te4+4O10

Chessexite

Na4Ca2Mg3Al8(SiO4)2(SO4)10(OH)10·40H2O

Averievite

Cu5O2(VO4)2·CuCl2

Avogadrite

KBF4

Awaruite

Ni3Fe

Kvanefjeldite

Na4CaSi6O14(OH)2

Labuntsovite-Fe

Na4K4Fe2+2Ti8O4(Si4O12)4(OH)4·10-12H2O

Lakargiite

CaZrO3

Murmanite

Na2Ti2Na2Ti2(Si2O7)2O4(H2O)4

Turkestanite

(K,◻)(Ca,Na)2ThSi8O20·nH2O

Babunaite-(Nd)

Nd(AsO4)

Backite

Pb2AlTeO6Cl

Badalovite

NaNaMg(MgFe3+)(AsO4)3

Baddeleyite

ZrO2

Badengzhuite

TiP