Mineralogy Database

A Listing of Minerals

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A Mineral Index (383 Count)

This alphabetical listing of A minerals include synonyms of accepted mineral names, pronunciation of that name, name origins, and locality information.

LEGEND: Valid Species (Bold);  Pronunciation;  Mineral Image;  Mineral Image Gallery;  jCrystal Form;  jPOWD Form;          Calculated Radioactive Intensity

A Mineral Pages:[1] [2] [3] [4] [5]

Argentite Say Argentite  View Argentite Image View Argentite Form Ag2S Not Approved IMA
NAME ORIGIN: After the Latin, argentum, meaning "silver". From the Greek, akanta, meaning "arrow." Argentite is stable above 179 C. Acanthite is stable below 179 C.
Argentojarosite Say Argentojarosite  View Argentojarosite Image AgFe+++3(SO4)2(OH)6 Valid Species (Pre-IMA) 1923
NAME ORIGIN: Named for the silver content and relationship to jarosite.
Argentopentlandite Say Argentopentlandite  View Argentopentlandite Image  Ag(Fe,Ni)8S8 Approved IMA 1977
NAME ORIGIN: For the similarity in composition to pentlandite.
Argentopyrite Say Argentopyrite  View Argentopyrite Image AgFe2S3 Valid Species (Pre-IMA) 1868
NAME ORIGIN: For its composition and physical similarity to pyrite.
Argentotennantite Say Argentotennantite (Ag,Cu)10(Zn,Fe)2(As,Sb)4S13 Approved IMA 1986
NAME ORIGIN: For the chemical composition and by analogy to tennantite.
Argutite Say Argutite  View Argutite Image  GeO2 Approved IMA 1983
NAME ORIGIN: Named for the locality. LOCALITY: From the Argut deposit, central Pyrenees, Haute-Garonne, France.
Argyrodite Say Argyrodite  View Argyrodite Images Gallery View Argyrodite Form  Ag8GeS6 Valid Species (Pre-IMA) 1886
NAME ORIGIN: For the Greek for "silver-containing."
Arhbarite Say Arhbarite  View Arhbarite Image Cu2Mg(AsO4)(OH)3 Approved IMA 1982
NAME ORIGIN: Named for the locality. LOCALITY: Arhbar mine, Bou-Azzer, Morocco.
Aricite - See Gismondine
Aristarainite Say Aristarainite  View Aristarainite Image  Na2MgB12O20·8(H2O) Approved IMA 1974
NAME ORIGIN: Named for Lorenzo Francisco Aristarain (1926- ), Argentine mineralogist specializing in borate deposits, La Plata University, Buenos Aires, Argentina.
Arizonite - See Pseudorutile
Arkelite - See Tazheranite
REMARKS: Tazheranite, name originally used for synthetic material.
Armalcolite Say Armalcolite  View Armalcolite Image  (Mg,Fe++)Ti2O5 Approved IMA 1970
NAME ORIGIN: Named after the three astronauts of Apollo 11: Neil A. ARMstrong, Edwin E. "Buzz" ALdrin, and Michael COLlins.
Armangite Say Armangite  View Armangite Image View Armangite Form  Mn26As+++18O50(OH)4(CO3) Valid Species (Pre-IMA) 1920
NAME ORIGIN: Named for Arsenic and MANGanese in the composition.
Armbrusterite View Armbrusterite Images Gallery   K5Na6Mn+++Mn++14[Si9O22]4(OH)10·4H2O Approved IMA 2005 (Dana # Added)
NAME ORIGIN: Named for Thomas Armbruster (b. 1950; University of Berne) for his outstanding contribution to structural mineralogy and crystallography, especially to the study of Mn-rich minerals.
Armenite Say Armenite  View Armenite Image  BaCa2Al6Si9O30·2(H2O) Valid Species (Pre-IMA) 1939
NAME ORIGIN: The name origin for Armenite is the type locality. LOCALITY: Armen Mine, Kongsberg, Norway.
Armstrongite Say Armstrongite  View Armstrongite Image  CaZrSi6O15·3(H2O) Approved IMA 1973
NAME ORIGIN: Named for Neil Alden Armstrong, (1930-), American astronaut, first human being on the moon's surface, Apollo 11 Lunar Mission.
Arnhemite  (K,Na)2Mg2(P2O7)·5(H2O) Not Approved IMA
NAME ORIGIN: Named after it's locality. LOCALITY: Arnhem Cave, Namibia.
Arrojadite Say Arrojadite  View Arrojadite Images Gallery   KNa4CaMn++4Fe++10Al(PO4)12(OH,F)2 Renamed IMA 2005, Dana # changed from 41.7.2.1
NAME ORIGIN: To honor Miguel Arrojado Ribeiro Lisboa (1872-1932), Brazilian geologist. Arrojadite {1925) is renamed arrojadite-(KFe) and arrojadite becomes the group name.
Arrojadite-(BaFe) Say Arrojadite-(BaFe)  View Arrojadite-(BaFe) Image   (Ba,K,Pb)Na3(Ca,Sr)(Fe++,Mg,Mn)14Al(PO4)11(PO3OH)(OH,F)2 Approved IMA 1996 (Dana # Added)
NAME ORIGIN: Originally for Pietro Sigismund (1874-1962), renamed arrojadite-(BaFe) in 2005 by the IMA.
Arrojadite-(BaNa) Say Arrojadite-(BaNa) BaFe++Na2Ca(Fe++,Mn,Mg)13Al(PO4)11(PO3OH)(OH,F)2 Not Submitted IMA (Dana # Added)
NAME ORIGIN: Named after arrojadite and site occupancy of the arrojadite structure.
Arrojadite-(KFe) Say Arrojadite-(KFe)  View Arrojadite-(KFe) Image   KNa2CaNa2(Fe++,Mn,Mg)13Al(PO4)11(PO3OH)(OH,F)2 Not Submitted IMA (Dana # Added)
NAME ORIGIN: Named after arrojadite and site occupancy of the arrojadite structure.
Arrojadite-(KNa) Say Arrojadite-(KNa)  View Arrojadite-(KNa) Image   KNa4Ca(Fe,Mn,Mg)13Al(PO4)11(PO3OH)(OH,F)2 Approved IMA 2005 (Dana # Added)
NAME ORIGIN: Named after arrojadite and site occupancy of the arrojadite structure.
Arrojadite-(NaFe) Say Arrojadite-(NaFe)  View Arrojadite-(NaFe) Image NaNa2CaNa2(Fe++,Mn,Mg)13Al(PO4)11(PO3OH)(OH,F)2 Not Submitted IMA (Dana # Added)
NAME ORIGIN: Named after arrojadite and site occupancy of the arrojadite structure.
Arrojadite-(PbFe) Say Arrojadite-(PbFe) PbFe++Na2Ca(Fe++,Mn,Mg)13Al(PO4)11(PO3OH)(OH,F)2 Approved IMA 2005 (Dana # Added)
NAME ORIGIN: Named after arrojadite and site occupancy of the arrojadite structure.
Arrojadite-(SrFe) Say Arrojadite-(SrFe)    SrFe++Na2Ca(Fe++,Mn,Mg)13Al(PO4)11(PO3OH)(OH,F)2 Approved IMA 2005 (Dana # Added)
NAME ORIGIN: Named after arrojadite and site occupancy of the arrojadite structure.
Arsenbrackebuschite Say Arsenbrackebuschite  View Arsenbrackebuschite Image  Pb2(Fe++,Zn)(AsO4)2·(H2O) Approved IMA 1978
NAME ORIGIN: As the arsenate analog of "brackebuschite."
Arsendescloizite Say Arsendescloizite  View Arsendescloizite Image  PbZn(AsO4)(OH) Approved IMA 1982
NAME ORIGIN: As the arsenate analog of "descloizite."
Arsenic Say Arsenic  View Arsenic Images Gallery View Arsenic Form  As Valid Species (Pre-IMA) Prehistoric
NAME ORIGIN: From the Greek, Arsenikon, a name originally applied to the mineral orpiment.
Arsenical nickel - See Nickeline
Arsenical pyrite - See Arsenopyrite
Arseniodialyte - See Hausmannite
Arseniopleite Say Arseniopleite  View Arseniopleite Image  (Ca,Na)(Na,Pb)Mn++(Mn++,Mg,Fe++)2(AsO4)3 Valid Species (Pre-IMA) 1888
NAME ORIGIN: Named from the Latin for the element As, and Greek for 'more' because it adds to the number of related minerals already described.
Arseniosiderite Say Arseniosiderite  View Arseniosiderite Image Ca2Fe+++3(AsO4)3O2·3(H2O) Valid Species (Pre-IMA) 1842
NAME ORIGIN: For essential "arsenic" in the composition, and "sideros," Greek for "iron."
Arsenobismite Say Arsenobismite Bi2(AsO4)(OH)3 Discredited IMA 1999
NAME ORIGIN: Named in 1916 for it's composition.
Arsenoclasite Say Arsenoclasite   Mn5(AsO4)2(OH)4 Valid Species (Pre-IMA) 1931
NAME ORIGIN: Named from "arsenic" and the Greek for "breaking," for its excellent cleavage.
Arsenocrandallite Say Arsenocrandallite  View Arsenocrandallite Image (Ca,Sr)Al3[(As,P)O4]2(OH)5·(H2O) Approved IMA 1981
NAME ORIGIN: For "arsenic" in the composition, and relation to "crandallite."
Arsenoflorencite-(Ce) Say Arsenoflorencite-(Ce)  View Arsenoflorencite-(Ce) Image  (Ce,La)Al3(AsO4)2(OH)6 Approved IMA 1987
NAME ORIGIN: Named as the arsenic analog of florencite and the dominant rare earth element, cerium.
Arsenoflorencite-(La) Say Arsenoflorencite-(La)  View Arsenoflorencite-(La) Image  (La,Sr)Al3(AsO4,SO4,PO4)2(OH)6 Not Approved IMA 1991
NAME ORIGIN: Named as the arsenic analog of florencite and the dominant rare earth element, Lanthanum.
Arsenoflorencite-(Nd) Say Arsenoflorencite-(Nd)   (Nd,La,Ce,Ba)(Al,Fe+++)3(AsO4,PO4)2(OH)6 Not Approved IMA
NAME ORIGIN: Named as the arsenic analog of florencite and the dominant rare earth element, Neodymium.
Arsenogorceixite Say Arsenogorceixite  View Arsenogorceixite Images Gallery BaAl3AsO3(OH)(AsO4,PO4)(OH,F)6 Approved IMA 1992 (Dana # Added)
NAME ORIGIN: For its "arsenic" content and relation to "gorceixite."
Arsenogoyazite Say Arsenogoyazite  View Arsenogoyazite Images Gallery (Sr,Ca,Ba)Al3(AsO4,PO4)2(OH,F)5·(H2O) Approved IMA 1984
NAME ORIGIN: Named for the chemical composition and it's relationship to goyazite.
Arsenohauchecornite Say Arsenohauchecornite  View Arsenohauchecornite Image  Ni18Bi3AsS16 Approved IMA 1980
NAME ORIGIN: Alludes to its chemical relation to the hauchecornite group.
Arsenolamprite Say Arsenolamprite  View Arsenolamprite Images Gallery  As Valid Species (Pre-IMA) 1886
NAME ORIGIN: Named for the composition and the Greek for brilliance, in allusion to its luster.
Arsenolite Say Arsenolite  View Arsenolite Image View Arsenolite Form  As2O3 Valid Species (Pre-IMA) 1854
NAME ORIGIN: For ARSENic in the composition.
Arsenopalladinite Say Arsenopalladinite  View Arsenopalladinite Image Pd8(As,Sb)3 Approved IMA 1974
NAME ORIGIN: Named for its composition.
Arsenopyrite Say Arsenopyrite  View Arsenopyrite Images Gallery View Arsenopyrite Form  FeAsS Valid Species (Pre-IMA) 1847
NAME ORIGIN: Named after the minerals chemical composition.
Arsenopyromorphite - See Mimetite
Arsenosulvanite Say Arsenosulvanite  View Arsenosulvanite Image  Cu3(As,V)S4 Discredited IMA 2006 - Valid Species (Pre-IMA) 1941
NAME ORIGIN: Named for its chemical relationship to sulvanite.
Arsenosulvanite - See Colusite
Arsenovanmeersscheite  U(OH)4[(UO2)3(AsO4)2(OH)2]·4H2O Proposed IMA 2006
NAME ORIGIN: Commission on New Minerals, Nomenclature and Classification (CNMNC)
Arsenowaylandite BiAl3(AsO4)2(OH)6 Not Approved IMA
NAME ORIGIN: Named as the arsenate analog of waylandite.
Arsenpolybasite Say Arsenpolybasite  View Arsenpolybasite Image  [Ag9CuS4] [(Ag,Cu)6(As,Sb)2S7] Approved IMA 1963
NAME ORIGIN: For the chemical composition and close relationship to polybasite.
Arsentsumebite Say Arsentsumebite  View Arsentsumebite Image  Pb2Cu(AsO4)(SO4)(OH) Valid Species (Pre-IMA) 1935
NAME ORIGIN: Named as the "arsenate" analog of "tsumebite."
Arsenuranospathite Say Arsenuranospathite  View Arsenuranospathite Image  HAl(UO2)4(AsO4)4·40(H2O) Approved IMA 1978
NAME ORIGIN: As the "arsenate" analog of "uranospathite."
Arsenuranylite Say Arsenuranylite  View Arsenuranylite Image  Ca(UO2)4(AsO4)2(OH)4·6(H2O) Valid Species (Pre-IMA) 1958
NAME ORIGIN: Named for its relationship to phosphuranylite as the end-member.
Arthurite Say Arthurite  View Arthurite Images Gallery  CuFe+++2(AsO4,PO4,SO4)2(O,OH)2·4(H2O) Approved IMA 1964
NAME ORIGIN: Named for Sir Arthur Edward Ian Montagu Russell (1878-1964) and Arthur William Gerald Kingsbury (1906-1968) for their contributions to British mineralogy.
Artinite Say Artinite  View Artinite Images Gallery Mg2(CO3)(OH)2·3(H2O) Valid Species (Pre-IMA) 1902
NAME ORIGIN: Named after the Italian mineralogist, Ettore Artini (1866-1928), mineralogist at the University of Milan.
Artroeite Say Artroeite  View Artroeite Form  PbAlF3(OH)2 Approved IMA 1995
NAME ORIGIN: For Dr. Arthur (Art) Roe (1912-1993).
Artsmithite View Artsmithite Images Gallery Hg+4Al(PO4)1.74(OH)1.78 Approved IMA 2003 (Dana # Added)
NAME ORIGIN: Named for Arthur (Art) E. Smith (1935-), American petroleum geologist from Houston, Texas who collected the original sample.
Arupite Say Arupite (Ni,Fe++)3(PO4)2·8(H2O) Approved IMA 1990
NAME ORIGIN: To honor Hans Henning Arup (1928- ), Director of the Danish Corrosion Center, Copenhagen, Denmark.
Arzakite Say Arzakite  View Arzakite Image  Hg3S2(Br,Cl)2 Approved IMA 1984
NAME ORIGIN: Named after it's locality. LOCALITY: Arzak mercury deposits, Tuva, Siberia, Russia.
Arzrunite Cu4Pb2SO4(OH)4Cl6·2(H2O) Valid Species (Pre-IMA) 1899
NAME ORIGIN: Named after Andreas Arzruni (1847-1898), German mineralogist, University of Aachen.
Asbecasite Say Asbecasite  View Asbecasite Image  Ca3(Ti,Sn)As+++6Si2Be2O20 Approved IMA 1966
NAME ORIGIN: The name origin for Asbecasite is the main elements: As,Be,Ca,Si.
Asbestos - See Parachrysotile
Asbestos - See Orthochrysotile
Asbestos - See Chrysotile
Asbestos - See Clinochrysotile
Asbolane Say Asbolane  View Asbolane Image (Co,Ni)1-y(Mn++++O2)2-x(OH)2-2y+2x·n(H2O) Valid Species (Pre-IMA) 1847
NAME ORIGIN: Named from the Greek "to soil like soot".
Aschamalmite Say Aschamalmite  View Aschamalmite Images Gallery  Pb6Bi2S9 Approved IMA 1983
NAME ORIGIN: Named for the locality. LOCALITY: Ascham Alm, Untersulzbachtal, Austria.
Ascharite - See Szaibelyite
Ashanite Say Ashanite   (Nb,Ta,U,Fe,Mn)4O8 Discredited IMA 1998
NAME ORIGIN: From Altai and SHAN, Chinese for "mountains," for the occurrence in the Altai Mountains, China.
Ashburtonite Say Ashburtonite  View Ashburtonite Image  HPb4Cu++4Si4O12(HCO3)4(OH)4Cl Approved IMA 1989
NAME ORIGIN: Named for the locality. LOCALITY: Anticline prospect, on Mineral Claim 84, which is on the Ashburton Downs pastoral lease, 11.2 km west-southwest of Ashburton Downs homestead.
Ashcroftine-(Ce) Say Ashcroftine-(Ce)   K5Na5(Ce,Ca)12Si28O70(OH)2(CO3)8·8(H2O) Not Approved IMA
NAME ORIGIN: Named for Frederick Noel Ashcroft (1878-1949), benefactor to the British Museum (Natural History), London, England.
Ashcroftine-(Y) Say Ashcroftine-(Y)    K5Na5(Y,Ca)12Si28O70(OH)2(CO3)8·8(H2O) Valid Species (Pre-IMA) 1933
NAME ORIGIN: Named for Frederick Noel Ashcroft (1878-1949), benefactor to the British Museum (Natural History), London, England.
Ashoverite Say Ashoverite Zn(OH)2 Approved IMA 1988
NAME ORIGIN: Named for the locality. LOCALITY: Milltown, near Ashover, Derbyshire, England.
Ashtonite - See Mordenite
Asisite Say Asisite  View Asisite Image  Pb12(SiO4)O8Cl4 Approved IMA 1988
NAME ORIGIN: The root name "Asis" means "drinking place" in the local Nama language and is also the name of the farm on which the Kombat mine is located. LOCALITY: Kombat mine, located 37 km east of Otavi and 49 km south of Tsumeb in the north-central part of Namibia.
Aspidolite Say Aspidolite  View Aspidolite Image  NaMg3AlSi3O10(OH)2 Approved IMA 1980
NAME ORIGIN: The name is from the Greek "aspisidos", like a shield, alluding to the appearance of its crystals.
Asselbornite Say Asselbornite  View Asselbornite Image  (Pb,Ba)(UO2)6(BiO)4(AsO4)2(OH)12·3(H2O) Approved IMA 1983
NAME ORIGIN: Named for Eric Asselborn (1954-), mineral collector and surgeon, Montrevel-en-Bresse, Dijon, France, in whose collection the mineral was first found..
Astrocyanite-(Ce) Say Astrocyanite-(Ce)  View Astrocyanite-(Ce) Image  Cu2(Ce,Nd,La)2(UO2)(CO3)5(OH)2·1.5(H2O) Approved IMA 1990
NAME ORIGIN: Named from the Greek for "star" and "blue" alluding to the star-like habit and blue color and the dominant Ce.
Astrophyllite Say Astrophyllite  View Astrophyllite Image   K2Na(Fe++,Mn)7Ti2Si8O26(OH)4 Valid Species (Pre-IMA) 1854
NAME ORIGIN: From the Greek aster - "star" and fyllon - "leaf."
Atacamite Say Atacamite  View Atacamite Image View Atacamite Form  Cu2Cl(OH)3 Valid Species (Pre-IMA) 1801
NAME ORIGIN: Named after its locality. LOCALITY: Atacam desert province in northern Chile.
Atelestite Say Atelestite  View Atelestite Image View Atelestite Form  Bi8(AsO4)3(OH)5O5 Valid Species (Pre-IMA) 1832
NAME ORIGIN: Derivation not explicitly stated. Probably from the Greek for "incomplete," as the composition was undetermined when the mineral was first described.
Atencioite View Atencioite Image Ca2Fe++[ ]Mg2Fe++2Be4(PO4)6(OH)4·6H2O Approved IMA 2004 (Dana # Added)
NAME ORIGIN: Named for Dr. Daniel Atencio, professor of mineralogy at the Geoscience Institute of the University of São Paulo, Brazil.
Athabascaite Say Athabascaite  View Athabascaite Image Cu5Se4 Approved IMA 1969
NAME ORIGIN: Named for the locality. LOCALITY: Martin Lake mine, Uranium City, Lake Athabasca, SK, Canada.
Atheneite Say Atheneite  View Atheneite Image (Pd,Hg)3As Approved IMA 1973
NAME ORIGIN: After the Greek goddess "Pallas Athene," in allusion to its palladium content.
Atlasovite Say Atlasovite  View Atlasovite Image  Cu6Fe+++Bi+++O4(SO4)5·KCl Approved IMA 1987
NAME ORIGIN: Named for Vladimir Vasil’evich Atlasov (1661/1664-1711), Russian traveller who first explored the Kamchatka Peninsula.
Atokite Say Atokite  View Atokite Image  (Pd,Pt)3Sn Approved IMA 1975
NAME ORIGIN: For the Atok mine, South Africa.
Atopite - See Romeite
Attacolite - See Attakolite
Attakolite Say Attakolite  View Attakolite Image  (Ca,Sr)Mn++(Al,Fe+++)4[(Si,P)O4]H(PO4)3(OH)4 Valid Species (Pre-IMA) 1868
NAME ORIGIN: Named from the Greek for "salmon" for the pale pink color.
Attapulgite - See Palygorskite
Attikaite View Attikaite Image Ca3Cu2Al2(AsO4)4(OH)4·2H2O Approved IMA 2006 (Dana # Added)
NAME ORIGIN: Named for the locality. LOCALITY: Christiana mine No. 132, Kamareza, Lavrion District, Attií Prefecture, Greece.
Aubertite Say Aubertite  View Aubertite Image  CuAl(SO4)2Cl·14(H2O) Approved IMA 1978
NAME ORIGIN: Named for J. Aubert (1929- ), French geophysicist who collected the first specimens.
A Mineral Pages:[1] [2] [3] [4] [5]