Minerals beginning with the letter A

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Image Name Formula Color
abellaite

Abellaite
(IMA 2014-111)

NaPb2(CO3)2(OH)colorless, white
TM

Abernathyite

K(UO2)(AsO4)·4(H2O)yellow
TM

Abhurite

Sn3O(OH)2Cl2colorless
abuite

Abuite
(IMA 2014-084)

CaAl2(PO4)2F2colorless
TM

Acanthite

Ag2Sgray, black
achalaite

Achalaite
(IMA 2016-009)

Fe+2TiNb2O8black
TM

Actinolite

Ca2(Mg,Fe+2)5Si8O22(OH)2green, black
TM

Adachiite
(IMA 2012-101)

CaFe3Al6(Si3AlO18)(BO3)3(OH)3(OH)black, brown, bluish purple
TM

Adamite

Zn2(As4O)(OH)yellow, green, violet, pink, white
TM

Adamsite-(Y)
(IMA 1999-020)

NaY(CO3)2·6(H2O)colorless, white, pink, light purple
TM

Adelite

CaMg(AsO4)(OH)blue gray, green, gray, yellow, light green
adolfpateraite

Adolfpateraite

K(UO2)(SO4)(OH)(H2O)sulfur yellow to greenish yellow
adranosite

Adranosite
(IMA 2008-057)

(NH4)4NaAl2(SO4)4Cl(OH)2white
TM

Adranosite-(Fe)
(IMA 2011-006)

(NH4)4NaFe+32(SO4)4Cl(OH)2yellow, yellow-green
adrianite

Adrianite
(IMA 2014-028)

Ca12(Al4Mg3Si7)O32Cl6
TM

Adularia

-->

Orthoclase

KAlSi3O8colorless, green, yellow, white, pink
TM

Aegirine

NaFe+3(Si2O6)green, black, brown
TM

Aenigmatite

(Na,Ca)4(Fe+2,Ti,Mg)12Si12O40brown, black
TM

Aerinite

(Ca,Na)6FeAl(Fe+2,Mg)2(Al,Mg)6[Si12O36(OH)12H][(H2O)12(CO3)]blue
TM

Aeschynite-(Nd)

(Nd,Ce)(Ti,Nb)2(O,OH)6brown
TM

Aeschynite-(Y)

(Y,Ca,Fe)(Ti,Nb)2(O,OH)6brown, black, yellow
TM

Afghanite

(Na,Ca,K)8(Si,Al)12O24(SO4,Cl,CO3)3·(H2O)blue, colorless
TM

Afmite
(IMA 2005-025a)

Al3(OH4)(H2O)3(PO4)(PO3OH)·(H2O)white, colorless, cream, yellow
TM

Afwillite

Ca3(Si2O4)(OH)6colorless, white
TM

Agardite-(Ce)

(Ce,Ca)Cu6(AsO4)3(OH)6·3(H2O)yellow green
TM

Agardite-(La)

(La,Ca)Cu5(AsO4)3(OH)6·3(H2O)colorless, green, blue
TM

Agardite-(Nd)

(Pb,Nd,Y,La,Ca)Cu6(AsO4)3(OH)6·3(H2O)green, blue
TM

Agardite-(Y)

(Y,Ca)Cu6(AsO4)3(OH)6·3(H2O)green, blue
TM

Ahlfeldite

(Ni,Co)SeO3·2(H2O)brown, green, red
TM

Aikinite

PbCuBiS3gray, black, brown, silver
TM

Ajoite

(K,Na)3Cu20Al3Si9O76(OH)16·8(H2O)blue, green
TM

Akaganeite
(IMA 1962-004)

Fe+3(O,OH,Cl)brown, red-brown
TM

Akatoreite

(Mn+2,Fe+2)9Al2Si8O24(OH)8orange, brown
TM

Aktashite

Cu6Hg3As4S12gray black
TM

Alabandite

MnSblack, gray
TM

Alacránite

As8S9red, orange, yellow
TM

Albertite

black
TM

Albite

NaAlSi3O8white, gray, green
TM

Alcaparrosaite
(IMA 2011-024)

K3Ti+4Fe+3(SO4)4O·2(H2O)yellow
TM

Aldermanite
(IMA 1980-044)

Mg5Al12(PO4)8(OH)22·32(H2O)colorless
TM

Aldridgeite

(Cd,Ca)(Cu,Zn)4(SO4)2(OH)6·3(H2O)pale blue
TM

Alexandrite

BeAl2O4green, brown, gray
TM

Alfredopetrovite
(IMA 2015-026)

Al2(Se+4O3)3·6(H2O)colorless to blue
TM

Aliettite

(Mg3Si4O10(OH)2)(Ca0.5,Na)0.33(Al,Mg,Fe+2)2-3(Si,Al)4O10(OH)2·n(H2O)white, green, gray
TM

Allanite-(Ce)

(Ce,Ca,Y)2(Al,Fe+3)3(SiO4)3(OH)brown, reddish brown, black
TM

Allanite-(Nd)
(IMA 2010-060)

(Ca,Nd)(Al2,Fe+2)(Si2O7)(SiO4)(O)(OH)brown, black
TM

Allargentum

Ag1-xSbxsilver gray
TM

Alleghanyite

Mn5(SiO4)2(OH)2white, brown, pink
TM

Allemontite

-->

Stibarsen

AsSbwhite, reddish gray
TM

Alloclasite

(Co,Fe)AsSgray
TM

Allophane

(Al2O3)(SiO2)1.3·2.5(H2O)white, green, blue, yellow, brown
TM

Almandine

Fe+23Al2(SiO4)3red, black, brown
TM

Almeidaite
(IMA 2013-020)

PbZn2(Mn,Y)(Ti,Fe+3)18O37(OH,O)black
TM

Alpeite
(IMA 2016-072)

Ca4Mn+32Al2(Mn+3Mg)(SiO4)2(Si3O10)(V+5O4)(OH)6brown red
TM

Alstonite

BaCa(CO3)2colorless, gray, white, pink
TM

Altaite

PbTewhite, yellow
TM

Althausite

Mg2(PO4)(OH,F,O)gray
TM

Althupite
(IMA 1986-003)

ThAl(UO2)7(PO4)4(OH)5·15(H2O)yellow
TM

Alum-(K)

Kal(SO4)2·12(H2O)colorless, white
TM

Aluminite

Al2(SO4)(OH)4·7(H2O)white
TM

Aluminocerite-(Ce)
(IMA 2007-060)

(Ce,Ree,Ca)9(Al,Fe+3)(SiO4)3((SiO3)(OH))4(OH)3pink
TM

Aluminocopiapite

Al.66Fe+34(SO4)6O(OH)2·20(H20)yellow
TM

Alumoedtollite
(IMA 2017-020)

K2NaCu5AlO2(AsO4)4bronze
TM

Alumogel

TM

Alumoklyuchevskite
(IMA 1993-004)

K3Cu3AlO2(SO4)4dark green
alumovesuvianite

Alumovesuvianite
(IMA 2016-014)

Ca19Al(Al,Mg)12Si18)69(OH)9colorless, light pink
TM

Alwilkinsite-(Y)
(IMA 2015-097)

Y(H2O)7((UO2)3(SO4)2O(OH)3)·7(H2O)yellowish green
TM

Amarantite

Fe+32(SO4)2O·7(H2O)brown, red, orange, pink
TM

Amazonite

-->

Microcline

KAlSi3O8blue
TM

Ambrinoite
(IMA 2009-071)

(K,NH4)2(As,Sb)6(Sb,As)2S13·(H2O)red
TM

Amethyst

-->

Quartz

SiO2purple
TM

Ammineite
(IMA 2008-032)

CuCl2(NH3)2deep blue to sky blue
TM

Ammonioborite

(NH4)2B10O16·5(H2O)white
TM

Ammoniomagnesiovoltaite
(IMA 2009-040)

(NH4)2Mg+25Fe+33Al(SO4)12·18(H2O)yellow, yellow brown
ammoniomathesiusite

Ammoniomathesiusite
(IMA 2017-077)

(NH4)5(UO2)4(SO4)4(VO5)·4(H2O)
ammoniovoltaite

Ammoniovoltaite

(NH4)2Fe+25Fe+33Al(SO4)12(H2O)18black
TM

Ammoniozippeite
(IMA 2017-073)

(NH4)2((UO2)2(SO4)O2)·(H2O)yellow to yellow-orange
TM

Analcime

NaAlSi2O6·(H2O)white, grayish white, greenish white, yellowish white, reddish white
TM

Anapaite

Ca2Fe+2(PO4)2·4(H2O)white, green
TM

Anatase

TiO2black, reddish brown, yellowish brown, dark blue, gray
TM

Ancylite-(Ce)

SrCe(CO3)2(OH)·(H2O)brown, red, colorless, gray, pink
TM

Andalusite

Al2(SiO4)Ogreen, gray, brown, red
TM

Andersonite

Na2Ca(UO2)(CO3)3·6(H2O)yellow green, green
TM

Andorite

PbAgSb3S6yellow, gray
TM

Andradite

Ca3Fe+32(SiO4)3black, yellowish brown, red, greenish yellow, gray
TM

Andrianovite

Na12(K,Sr,Ce)3Ca6Mn3Zr3Nb(Si25O73)(O,H2O,OH)5yellow
TM

Angastonite
(IMA 2008-008)

CaMgAl2(PO4)2(OH)4·7(H2O)white
TM

Anglesite

PbSO4blue, green, gray, yellow, colorless
TM

Ankerite

Ca(Fe+2,Mg,Mn)(CO3)2brown, brownish yellow, gray, gray brown, white
TM

Annabergite

Ni3(AsO4)2·8(H2O)green, white, gray
TM

Annite

KFe+23AlSi3O10(OH,F)2brown, black
TM

Ansermetite

MnV2O6·4(H2O)red
TM

Anthophyllite

Mg7(Si8O22)(OH)2white, gray, green, brown
TM

Antigorite

(Mg,Fe+2)3(Si2O5)(OH)4green, gray, brown, black
TM

Antimonpearceite

(Ag9CuS4)((Ag,Cu)6(Sb,As)2S7)black
TM

Antimonselite
(IMA 1992-003)

Sb2Se3grey-white
TM

Antimony

Sbgray, white
TM

Antipinite
(IMA 2014-027)

KNa3Cu2(C2O4)4blue
TM

Antlerite

Cu3(SO4)(OH)4green, black
TM

Antozonite

-->

Fluorite

CaF2dark violet blue
TM

Apatite

Ca5(PO4)3(OH,F,Cl)colorless, white
TM

Apatite-(CaF)

Ca5(PO4)3Fblue, brown, colorless, purple, green
TM

Apjohnite

MnAl2(SO4)4·22(H2O)colorless, white, light yellow, light green, light pink
TM

Aplowite
(IMA 1963-009)

(Co,Mn,Ni)(SO4)·4(H2O)pink
TM

Apophyllite

KCa4(Si4O10)2Fwhite, pink, green, yellow, purple
TM

Apophyllite-(KF)

(K,Na)Ca4(Si8O20)(F,OH)·8(H2O)white, pink, green, yellow, purple
TM

Apophyllite-(KOH)

KCa4Si8O20(OH,F)·8(H2O)white, pink, green, yellow, purple
TM

Apuanite

Fe+2Fe+34Sb4O12Sblack
TM

Aqualite
(IMA 2002-066)

H3O8Na3K1.5Sr0.5Ca6Zr3Si26O66(OH)9Clpink
TM

Aquamarine

-->

Beryl

Be3Al2Si6O18green, blue, yellow, pink, colorless
TM

Aragonite

Ca(CO3)colorless, white, gray
TM

Arcanite

K2(SO4)colorless, yellow, white
TM

Ardennite-(As)

(Mn+2,Ca,Mg)4(Al,Mg,Fe)6(SiO4)2(Si3O10)(AsO4,VO4)(HO)6yellow, brown, orange, black
TM

Arfvedsonite

Na3(Fe+24,Fe+3)(Si8O22)(OH)2black, green, gray
TM

Argandite
(IMA 2010-021)

Mn7(VO4)2(OH)8orange
TM

Argentite

Ag2Sblack, gray
TM

Argentobaumhauerite
(IMA 2015-F)

Ag1.5Pb22As33.5S72steel gray
TM

Argentopyrite

AgFe2S3blue, brown, green, yellow, white
TM

Argyrodite

Ag8GeS6black, gray
TM

Arhbarite
(IMA 2002-B)

Cu2Mg(AsO4)(OH)3dark blue
TM

Armenite

BaCa2Al6Si9O15colorless, green, white
TM

Armstrongite

CaZrSi6O15·3(H2O)brown, reddish brown
arrojadite-(BaNa)

Arrojadite-(BaNa)
(IMA 2014-071)

BaNa3(Na,Ca)Fe+213Al(PO4)11(PO3OH)(OH)2pale grey-green, pale yellow brown
TM

Arrojadite-(KFe)

KNa2CaNa2(Fe+2,Mn,Mg)13Al(PO4)11(PO3OH)(OH,F)2green, brown, yellow
TM

Arsendescloizite

PbZn(AsO4)(OH)yellow, green
TM

Arsenic

Asgray, white
TM

Arseniopleite

(Ca,Na)(Na,Pb)Mn+2(Mn+2,Mg,Fe+2)2(AsO4)3red, red brown
TM

Arseniosiderite

Ca2Fe+33(AsO4)3O2·3(H2O)brown, yellow, black
TM

Arsenmedaite
(IMA 2016-099)

Mn+26As+5Si5O18(OH)orange-red
TM

Arsenogorceixite

BaAl3(AsO3)(OH)(AsO4,PO4)(OH,F)6white, yellow, blue, colorless
TM

Arsenolamprite

Asdark gray
TM

Arsenopyrite

FeAsSwhite, gray
arsentian vanadinite

Arsenatian vanadinite

-->

Vanadinite

Pb5((V,As)O4)3Clyellow, orange, red
TM

Arsentsumebite

Pb2Cu(AsO4)(SO4)(OH)green, yellow-green
TM

Arsiccioite
(IMA 2013-058)

AgHg2Tl(As,Sb)2S6red
TM

Arsmirandite
(IMA 2014-081)

Na18Cu12Fe+3O8(AsO4)8Cl5green
TM

Arthurite

CuFe+32(AsO4,PO4,SO4)2(O,OH)2·4(H2O)green
TM

Artinite

Mg2(CO3)(OH)2white
TM

Artroeite
(IMA 1993-031)

PbAlF3(OH)2colorless
asbecasite

Asbecasite

Ca3(Ti,Sn)As+36Si2Be2O20yellow, brown
TM

Asbestos

-->

Chrysotile

Mg3(Si2O5)(OH)4green
TM

Asbolane

(Co,Ni)1-y(Mn+4O2)2-x(OH)2-2y+12x·n(H2O)black, brownish black
TM

Aschamalmite

Pb6Bi2S9gray
TM

Ashburtonite
(IMA 1990-033)

HPb4Cu+24Si4O12(HCO3)4(OH)4Clblue
TM

Ashcroftine-(Y)

K5Na5(Y,Ca)12Si28O70(OH)2(CO3)8·8(H2O)purple, pink, brown
TM

åskagenite-(Nd)

Mn+2NdAl2Fe+3(Si2O7)(SiO4)O2black
TM

Astrophyllite

K2Na(Fe+2,Mn)7Ti2(Si8O26)(OH)4brown, red, yellow, gold
TM

Atacamite

Cu+22Cl(OH)3green, yellow, black
TM

Atelestite

Bi8(AsO4)3(OH)5O5green, light yellow, black
TM

Atencioite
(IMA 2004-041)

Ca2Fe+2Mg2Fe+22Be4(PO4)6(OH)4·6(H2O)greenish brown
augelite

Augelite

Al2(PO4)(OH)3colorless, yellow, green, blue, white
TM

Augite

(Ca,Na)(Mg,Fe,Al,Ti)(Si,Al)2O6brown, green, black
TM

Auriacusite
(IMA 2009-037)

Fe+3Cu+2(AsO4)Obrownish yellow
TM

Aurichalcite

(Zn,Cu+2)5(CO3)2(OH)6green, blue
TM

Auricupride

Cu3Aubronze, copper
TM

Aurorite

(Mn,Ag,Ca)Mn+43O7black
TM

Aurostibite

AuSb2gray
TM

Austinite

CaZn(AsO4)(OH)colorless, brown, yellow, white, green
TM

Autunite

Ca(UO2)2(PO4)2·12(H2O)yellow, green
TM

Avdoninite
(IMA 2005-046a)

K2Cu5Cl8(OH)4·(H2O)green
TM

Avicennite

Tl2O3gray-black
TM

Avogadrite

(K,Cs)BF4colorless, white, light yellow, light red
TM

Axinite-(Fe)

Ca2Fe+2Al2(BO3)(Si4O12)(OH)brown, purple, gray, yellow
TM

Axinite-(Mg)
(IMA 1975-025)

Ca2MgAl2(BO3)(Si4O12)(OH)brown, purple-blue, gray, green-yellow
TM

Axinite-(Mn)

Ca2Mn+2Al2(BO3)(Si4O12)(OH)brown, colorless, yellow, red
TM

Azurite

Cu3(CO3)2(OH)2azure blue, blue, light blue, dark blue

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