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]

Allanite-(Y) Say Allanite-(Y)  View Allanite-(Y) Image  (Y,Ce,Ca)2(Al,Fe+++)3(SiO4)3(OH) Valid Species (Pre-IMA) 1949 - Dana Number Modified from 58.2.1a.3
NAME ORIGIN: Named after the Scottish mineralogist, T. Allan (1777-1833).
Allanpringite View Allanpringite Image  Fe3(PO4)2(OH)3·5H2O Approved IMA 2004 (Dana # Added)
NAME ORIGIN: Named for Allan Pring, eminent Australian mineralogist.
Allargentum Say Allargentum  View Allargentum Image  Ag1-xSbx(x=0.009-0.16) Valid Species (Pre-IMA) 1949
NAME ORIGIN: Named from the Greek for 'another' and the Latin 'argentum'.
Alleghanyite Say Alleghanyite  View Alleghanyite Image  Mn5(SiO4)2(OH)2 Valid Species (Pre-IMA) 1932
NAME ORIGIN: Named after its locality. LOCALITY: Bald Knob, Alleghany Co., North Carolina, USA.
Allemontite - See Stibarsen
Allendeite View Allendeite Image Sc4Zr3O12 Approved IMA 2007 (Dana # Added)
NAME ORIGIN: Named for the locality. LOCALITY: Allende meteorite, Pueblito de Allende, Chihuahua, Mexico.
Allochalcoselite  Cu+Cu++5PbO2(SeO3)2Cl5 Approved IMA 2004 (Dana # Added)
NAME ORIGIN: The name is compositional and is derived from the Greek, for "different", "copper" and "selenium", to reflect the different valences and crystallographic behavior of copper in this selenite mineral.
Alloclasite Say Alloclasite   (Co,Fe)AsS Valid Species (Pre-IMA) 1866
NAME ORIGIN: From the Greek for "other", and "to break," because its cleavage was believed to be different from marcasite, which it resembles.
Allophane Say Allophane  View Allophane Image Al2O3·(SiO2)1.3-2·((H2O))2.5-3 Valid Species (Pre-IMA) 1816
NAME ORIGIN: From the Greek allos - "other" and phanos - "to appear" in allusion to its change when blowpiped.
Alloriite View Alloriite Image  Na5K1.5Ca(Si6Al6O24)(SO4)(OH)0.5·H2O Approved IMA 2006 (Dana # Added)
NAME ORIGIN: Named for Roberto Allori (1933*), Italian amateur mineralogist and collector, who found the mineral.
Alluaivite Say Alluaivite   Na19(Ca,Mn++)6(Ti,Nb)3(Si3O9)2(Si10O28)2Cl·2(H2O) Approved IMA 1990
NAME ORIGIN: For its occurrence on Mt. Alluaiv, Kola Peninsula, Russia.
Alluaudite Say Alluaudite  View Alluaudite Image  NaCaFe++(Mn,Fe++,Fe+++,Mg)2(PO4)3 Valid Species (Pre-IMA) 1848
NAME ORIGIN: Named for Francois Alluaud, mining engineer of Limoges, France, who discovered the mineral.
Almagrerite - See Zincosite
Almandine Say Almandine  View Almandine Image View Almandine Form  Fe++3Al2(SiO4)3 Valid Species (Pre-IMA) Prehistoric
NAME ORIGIN: Named after its locality. LOCALITY: Alabanda in Asia Minor.
Almandite - See Almandine
Almarudite   K([ ],Na)2(Mn,Fe,Mg)2(Be,Al)3[Si12O30] Approved IMA 2004 (Dana # Added)
NAME ORIGIN: After the authors’ hosting and supporting institution, "Universität Wien", and is derived from the university’s proper name "ALma MAter RUDolphina".
Almbosite Fe++5Fe+++4V+++++4Si3O27 Discredited IMA 1987 - Published 1980
NAME ORIGIN: Named for the locality. LOCALITY: Almhiitte Bos, Trentino-Alto Adige, Italy.
Almeraite - See Carnallite
REMARKS: Mixture of carnallite and halite.
Alpersite View Alpersite Image  (Mg,Cu)SO4·7H2O Approved IMA 2003 (Dana # Added)
NAME ORIGIN: Named after Charles N. Alpers, geochemist with the United States Geological Survey, who has made significant contributions to our understanding of the mineralogical controls of mine-water geochemistry.
Alsakharovite-Zn View Alsakharovite-Zn Image  NaSrKZn(Ti,Nb)4(Si4O12)2(O,OH)4·7(H2O) Approved IMA 2003 (Dana # Added)
NAME ORIGIN: Named for Aleksey S. Sakharov (1910-1996), Russian geologist who studied the Lovozero alkaline massif.
Alstonite Say Alstonite  View Alstonite Image View Alstonite Form BaCa(CO3)2 Valid Species (Pre-IMA) 1841
NAME ORIGIN: Named after the locality. LOCALITY: Brownley Hill lead mine, Alston, Cumberland and Fallowfield lead mine hear Hexham, Northcumberland, England.
Altaite Say Altaite  View Altaite Image  PbTe Valid Species (Pre-IMA) 1845
NAME ORIGIN: Named after its locality. LOCALITY: Ziryanovsk in the Altai Mountains, Siberia.
Althausite Say Althausite  View Althausite Image Mg2(PO4)(OH,F,O) Approved IMA 1975
NAME ORIGIN: To honor Professor Egon Althaus (1933- ), Karlsruhe University, Karlsruhe, Germany.
Althupite Say Althupite    ThAl(UO2)7(PO4)4(OH)5·15(H2O) Approved IMA 1986
NAME ORIGIN: For the major cations in the composition, Aluminum, Thorium, Uranium, Phosphorus.
Altisite Say Altisite  View Altisite Image   Na3K6Ti2Al2Si8O26Cl3 Approved IMA 1994
NAME ORIGIN: Name for the elements Al, Ti, and Si in the composition.
Altmarkite - See Leadamalgam
Aluminilite - See Alunite
Aluminite Say Aluminite  View Aluminite Image  Al2(SO4)(OH)4·7(H2O) Valid Species (Pre-IMA) 1807
NAME ORIGIN: Named after its chemical composition.
Aluminium - See Aluminum
Aluminobarroisite Say Aluminobarroisite [ ]CaNaMg3Al2(Si7Al)O22(OH)2 Approved IMA 1997 (Dana # Added)
NAME ORIGIN: Named as per current IMA amphibole nomenclature (Burke and Leake 2004; Can. Mineral., 42, 1881-1883).
Aluminoceladonite Say Aluminoceladonite  View Aluminoceladonite Image   KAl(Mg,Fe++)[ ]Si4O10(OH)2 Approved IMA 1997 (Dana # Added)
NAME ORIGIN: Named for the French celadon, (sea green), in allusion to its common color.
Aluminocerite-(Ce) View Aluminocerite-(Ce) Image  (Ce,REE,Ca)9(Al,Fe+++)(SiO4)3[SiO3(OH)]4(OH)3 Approved IMA 2007 (Dana # Added)
NAME ORIGIN: Named as the Al-dominant analog of cerite-(Ce).
Aluminocopiapite Say Aluminocopiapite  View Aluminocopiapite Image Al2/3Fe+++4(SO4)6O(OH)2·20(H2O) Valid Species (Pre-IMA) 1947
NAME ORIGIN: Named for its content of aluminum and relation to the copiapite group.
Aluminoferrobarroisite Say Aluminoferrobarroisite [ ]CaNa(Fe2+)3Al2(Si7Al)O22(OH)2 Approved IMA 1997 (Dana # Added)
NAME ORIGIN: Named as per current IMA amphibole nomenclature (Burke and Leake 2004; Can. Mineral., 42, 1881-1883).
Aluminoferrohornblende - See Ferrohornblende
Aluminoferrotschermakite Say Aluminoferrotschermakite  View Aluminoferrotschermakite Image [ ]Ca2(Fe2+)3Al2(Si6Al2)O22(OH)2 Approved IMA 1997 (Dana # Added)
NAME ORIGIN: Named for its composition and for Gustav Tschermak von Sessenegg (1836-1927), Austrian mineralogist.
Aluminokatophorite - See Katophorite
Aluminomagnesiohornblende - See Magnesiohornblende
Aluminomagnesiohulsite  Mg2(Al,Mg,Sn)(BO3)O2 Approved IMA 2004 (Dana # Added)
NAME ORIGIN: Named as the Al and Mg dominant member of the hulsite group.
Alumino-magnesiohulsite - See Aluminomagnesiohulsite
REMARKS: Renamed Aluminomagnesiohulsite by Mineralogical Record, v39 (2008), p131
Alumino-magnesiotaramite Say Alumino-magnesiotaramite   Na(CaNa)(Mg3Al2)(Si6Al2)O22(OH)2 Approved IMA 2006 (Dana # Added)
NAME ORIGIN: Named as per current IMA amphibole nomenclature (Burke and Leake 2004; Can. Mineral., 42, 1881-1883).
Aluminotaramite Say Aluminotaramite    Na(CaNa)(Fe+++3Al2)(Si6Al2)O22(OH)2 Approved IMA 2006 (Dana # Added)
NAME ORIGIN: Named as per current IMA amphibole nomenclature (Burke and Leake 2004; Can. Mineral., 42, 1881-1883).
Aluminotschermakite - See Tschermakite
Aluminowinchite - See Winchite
Aluminum Say Aluminum  View Aluminum Images Gallery  Al Approved IMA 1978
NAME ORIGIN: From the Latin, alumen = "alum."
Aluminum Sulfate - See Alunogen
Alum-(K) View Alum-(K) Image   KAl(SO4)2·12(H2O) Valid Species (Pre-IMA) 1875
NAME ORIGIN: Named for the element K and the Latin, alumen.
Alum-(Na)  NaAl(SO4)2·12(H2O) Valid Species (Pre-IMA)
NAME ORIGIN: Named for the composition.
Alumoakermanite (Ca,Na)2(Al,Mg,Fe++)(Si2O7) Proposed IMA 2008 (Dana # Added)
NAME ORIGIN: Named as the Al analog of akermanite.
Alumohydrocalcite Say Alumohydrocalcite  View Alumohydrocalcite Image CaAl2(CO3)2(OH)4·3(H2O) Valid Species (Pre-IMA) 1926
NAME ORIGIN: Named after its chemical composition.
Alumoklyuchevskite Say Alumoklyuchevskite  View Alumoklyuchevskite Images Gallery  K3Cu3AlO2(SO4)4 Approved IMA 1995
NAME ORIGIN: Named as the aluminum dominant analog of klyuchevskite.
Alumopharmacosiderite Say Alumopharmacosiderite  View Alumopharmacosiderite Image   KAl4(AsO4)3(OH)4·6·5(H2O) Approved IMA 1981
NAME ORIGIN: As the ALUMinum analog of "pharmacosiderite."
Alumotantite Say Alumotantite   AlTaO4 Approved IMA 1981
NAME ORIGIN: For ALUMinum and TANTalum in the composition.
Alumotungstite Say Alumotungstite  View Alumotungstite Image (W,Al)(O,OH)3 (?) Approved IMA 1971
NAME ORIGIN: Named for the composition.
Alunite Say Alunite  View Alunite Image View Alunite Form   KAl3(SO4)2(OH)6 Valid Species (Pre-IMA) 1824
NAME ORIGIN: From the Latin alunit, meaning "alum."
Alunogen Say Alunogen  View Alunogen Image View Alunogen Form  Al2(SO4)3·17(H2O) Valid Species (Pre-IMA) 1832
NAME ORIGIN: From the Latin alumen ="alum" and the Greek genos ="origin."
Alushtite - See Tosudite
Alvanite Say Alvanite (Zn,Ni)Al4(VO3)2(OH)12·2(H2O) Approved IMA 1959
NAME ORIGIN: Named for the ALuminum and VANadium in the composition.
Amakinite Say Amakinite   (Fe++,Mg)(OH)2 Approved IMA 1962
NAME ORIGIN: Named for the Amakin Expedition, which prospected the Yakutain diamond deposits.
Amalgam Say Amalgam Ag2Hg3 Not Approved IMA
NAME ORIGIN: Named for the Medieval Latin "amalgama" for a mercury-metal alloy, generally when the other metal is silver.
Amarantite Say Amarantite  View Amarantite Image View Amarantite Form  Fe+++(SO4)(OH)·3(H2O) Valid Species (Pre-IMA) 1888
NAME ORIGIN: Named from the Greek for amaranth, an imaginary purplish red undying flower, for its color.
Amarillite Say Amarillite  View Amarillite Image View Amarillite Form  NaFe+++(SO4)2·6(H2O) Valid Species (Pre-IMA) 1933
NAME ORIGIN: Named for the locality. LOCALITY: Tierra Amarilla, southeast of Copiapo, Atacama, Chile
Amazonstone - See Microcline
REMARKS: Green colored microclinte
Amber View Amber Image [C,H,O] Not Approved IMA
NAME ORIGIN: The name is for the yellow-orange-brown color.
Amblygonite Say Amblygonite  View Amblygonite Image View Amblygonite Form  (Li,Na)Al(PO4)(F,OH) Valid Species (Pre-IMA) 1817
NAME ORIGIN: From the Greek amblys - "blunt" and goni - "angle."
Ameghinite Say Ameghinite  View Ameghinite Image  NaB3O3(OH)4 Approved IMA 1967
NAME ORIGIN: Named for Carlos Ameghino (1865-1936) and Florentino Ameghino (1854-1911), both brothers and Argentine geologists.
Amesite Say Amesite  View Amesite Image  Mg2Al(SiAl)O5(OH)4 Valid Species (Pre-IMA) 1876
NAME ORIGIN: Honors James Ames, a mine owner.
Amethyst - See Quartz
REMARKS: Purple colored quartz
Amianthus - See Parachrysotile
Amicite Say Amicite  View Amicite Image   K2Na2Al4Si4O16·5(H2O) Approved IMA 1979
NAME ORIGIN: To honor Giovan Battista, Amici (1786-1863), physicist, optician, and inventor of microscope optical elements.
Aminoffite Say Aminoffite  View Aminoffite Image  Ca3Be2Si3O10(OH)2 Valid Species (Pre-IMA) 1937
NAME ORIGIN: Named for Gregori Aminoff (1993-1947), Swedish Mineralogist and crystallographer.
Ammonia alum - See Tschermigite
Ammonian arcanite - See Arcanite
Ammonioalunite Say Ammonioalunite  View Ammonioalunite Image (NH4)Al3(SO4)2(OH)6 Approved IMA 1987
NAME ORIGIN: Named for its composition (Ammonia, Al,).
Ammonioborite Say Ammonioborite   (NH4)2B10O16·5(H2O) Valid Species (Pre-IMA) 1931
NAME ORIGIN: Named for its composition, ammonium borate.
Ammoniojarosite Say Ammoniojarosite  View Ammoniojarosite Image View Ammoniojarosite Form  (NH4)Fe+++3(SO4)2(OH)6 Valid Species (Pre-IMA) 1927
NAME ORIGIN: Named as the ammonium analog of jarosite.
Ammonioleucite Say Ammonioleucite  View Ammonioleucite Image   (NH4,K)AlSi2O6 Approved IMA 1984
NAME ORIGIN: For "ammonia" in its chemical composition and its relation to "leucite."
Ammonium hexachlorostannate - See Panichiite
Amosite - See Grunerite
Amphigene - See Leucite
Amstallite Say Amstallite   CaAl(Si,Al)4O8(OH)4·((H2O),Cl) Approved IMA 1987
NAME ORIGIN: For the locality. LOCALITY: In the Amstall graphite quarry, Amstall, Austria.
An0 - See Albite
REMARKS: Plagioclase Solid Solution Series (100% to 95% Albite + 0% to 5% Anorthite)
An100 - See Anorthite
REMARKS: Plagioclase Solid Solution Series (0% to 5% Albite + 100% to 95% Anorthite)
An20 - See Oligoclase
REMARKS: Plagioclase Solid Solution Series (75% to 85% Albite + 25% to 15% Anorthite)
An40 - See Andesine
REMARKS: Plagioclase Solid Solution Series (55% to 65% Albite + 45% to 35% Anorthite)
An60 - See Labradorite
REMARKS: Plagioclase Solid Solution Series (35% to 45% Albite + 65% to 55% Anorthite)
An80 - See Bytownite
REMARKS: Plagioclase Solid Solution Series (15% to 25% Albite + 85% to 75% Anorthite)
Analcidite - See Analcime
Analcime Say Analcime  View Analcime Image View Analcime Form  NaAlSi2O6·(H2O) Valid Species (Pre-IMA) 1801
NAME ORIGIN: From the Greek word meaning weak, referring to a weak electrical charge developed on rubbing.
Analcite - See Analcime
Analzim - See Analcime
Anandite Say Anandite  View Anandite Image   (Ba,K)(Fe++,Mg)3(Si,Al,Fe)4O10(S,OH)2 Approved IMA 1967
NAME ORIGIN: Named for Ananda Kentish Coomaraswamy (1877-1947), first director of the Mineral Survey of Ceylon (Sri Lanka).
Anapaite Say Anapaite  View Anapaite Image View Anapaite Form  Ca2Fe++(PO4)2·4(H2O) Valid Species (Pre-IMA) 1910
NAME ORIGIN: For its discovery near Anapa, Russia.
Anatase Say Anatase  View Anatase Image View Anatase Form  TiO2 Valid Species (Pre-IMA) 1801
NAME ORIGIN: From the Greek, anatasis - "elongation."
Ancylite-(Ce) Say Ancylite-(Ce)  View Ancylite-(Ce) Image View Ancylite-(Ce) Form   SrCe(CO3)2(OH)·(H2O) Valid Species (Pre-IMA) 1899
NAME ORIGIN: Named for the composition and from the Greek "curved," in allusion to the rounded and distorted character of the crystals.
A Mineral Pages:[1] [2] [3] [4] [5]