Mineral Specimen Images (A)

Anthoinite: AlWO3(OH)3  
Cerotungstite-(Ce): (Ce,REE)W2O6(OH)3  
Ferberite: Fe++WO4

Comments: Yellow cerotungstite-(Ce), with black ferberite veins and whitish anthoinite.
Location: Bugarama, Rwanda. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Anthoinite: AlWO3(OH)3  
Mpororoite: Al(WO3)(OH)3·2(H2O)

Comments: White chalky massive mpororoite with brown anthoinite.
Location: Kara Mine, Tasmania, Australia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Anthophyllite: [ ]Mg7Si8O22(OH)2  
Biotite: K(Mg,Fe++)3[AlSi3O10(OH,F)2

Comments: Fibrous mass of anthophyllite as a shell around biotite.
Location: Hermanov, Severocesky, Czech Republic. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Anthophyllite: [ ]Mg7Si8O22(OH)2  
Magnesioanthophyllite: (Mg,Fe++)7Si8O22(OH)2

Comments: Schistose amphibolite rock composed primarily of anthophyllite (magnesioanthophyllite is now considered to be anthophyllite).
Location: Winchester, Riverside County, California, USA. Scale: See Image.
© Rruff Database

Antigorite: (Mg,Fe++)3Si2O5(OH)4

Comments: Yellowish green, fibrous antigorite.
Location: East Broughon, Quebec, Canada. Scale: 22x10 cm.
© Dave Barthelmy

Antigorite: (Mg,Fe++)3Si2O5(OH)4  
Chromite: Fe++Cr2O4

Comments: Chromite veins in yellow to green antigorite with picrolite, chromian antigorite and dolomite (polished section).
Location: Wood's Mine, near 'Texas', Little Britain Township, Lancaster County, Pennsylvania, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Antimony: Sb

Comments: Massive pure native antimony.
Location: Arechuybo, Chihuahua, Mexico. Scale: Size Not Given.
© John Veevaert

Antimony: Sb  
Valentinite: Sb2O3

Comments: Beige valentinite crystals with red kermesite in a matrix of gray, massive antimony.
Location: South-Ham Antimony mine, Lake Nicolet, Quebec, Canada. Scale: Picture Size 3 cm.
© Dave Barthelmy

Antlerite: Cu3(SO4)(OH)4

Comments: Dark green crystals of antlerite on sandstone.
Location: Ray mine, Ray, Pinal County, Arizona, USA. Scale: Size Not Given.
© Lou Perloff / Photo Atlas of Minerals

Antlerite: Cu3(SO4)(OH)4  
Metaschoepite: UO3·n(H2O)(n<2)

Comments: Yellow crystals of metaschoepite with green antlerite.
Location: Pöhla-Tellerhäuser Gallery, Pöhla, Schwarzenberg District, Erzgebirge, Saxony, Germany. Scale: Picture size 1.3 mm.
© Thomas Witzke / Abraxas-Verlag

Apachite: Cu9Si10O29·11(H2O)

Comments: Blue crusts of apachite on skarn rock.
Location: Christmas Mine, near Hayden, Gila County, Arizona, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Apachite: Cu9Si10O29·11(H2O)

Comments: Spherical crystals 0.2mm of blue apachite as grape-like botryodal aggregates.
Location: Christmas mine, Gila Co., Arizona, USA. Scale: Picture size 3.5 mm.
© Tom Loomis / Dakota Matrix

Apatite: Ca5(PO4)3(OH,F,Cl)  
Carbonate-fluorapatite: Ca5(PO4,CO3)3F

Comments: Pink, colliform carbonate-fluorapatite on matrix.
Location: Tip Top mine, Custer, Custer County, South Dakota, USA. Scale: Size Not Given.
© Lou Perloff / Photo Atlas of Minerals

Apatite: Ca5(PO4)3(OH,F,Cl)  
Apatite-(CaF): Ca5(PO4)3F  
Beryl: Be3Al2Si6O18  
Muscovite: KAl2(Si3Al)O10(OH,F)2

Comments: Pink crystals of fluorapatite with pale blue beryl (aquamarine) on books of muscovite crystals.
Location: Nagar area, Gilgit district, Northern Areas, Pakistan. Scale: 3 x 3 cm.
© Dan Weinrich

Apatite: Ca5(PO4)3(OH,F,Cl)  
Robertsite: Ca6Mn+++9(PO4)9O6(H2O)6·3(H2O)  
Carbonate-hydroxylapatite: Ca5(PO4,CO3)3(OH)

Comments: Black crystals of Robertsite on pink carbonate-hydroxylapatite.
Location: Tip Top mine, Custer, Custer County, South Dakota, USA. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Apatite-(CaCl): Ca5(PO4)3Cl

Comments: Blocky crystals of chlorapatite.
Location: Oyna, Froland, Norway. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Apatite-(CaF): Ca5(PO4)3F  
Beryl: Be3Al2Si6O18  
Muscovite: KAl2(Si3Al)O10(OH,F)2  
Apatite: Ca5(PO4)3(OH,F,Cl)

Comments: Pink crystals of fluorapatite with pale blue beryl (aquamarine) on books of muscovite crystals.
Location: Nagar area, Gilgit district, Northern Areas, Pakistan. Scale: 3 x 3 cm.
© Dan Weinrich

Apatite-(CaF): Ca5(PO4)3F  
Quartz: SiO2

Comments: Purple crystal of fluorapatite on slightly smoky quartz crystals. Former Dr. E.E. David and Houston Museum collections.
Location: Pech, Kunar Province, Nuristan, Afghanistan. Scale: Crystal size 3.0 x 2.1 x 1.7 cm.
© Ed Rosenzweig

Apatite-(CaF): Ca5(PO4)3F  
Gatumbaite: CaAl2(PO4)2(OH)2·(H2O)

Comments: White crystalline gatumbaite with yellow brazilianite in massive blue fluorapatite.
Location: Buranga Pegmatite, near Gatumba, Gisenyi, Rwanda. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Apatite-(CaOH): Ca5(PO4)3(OH)

Comments: Opaque white blocky crystal of hydroxylapatite.
Location: Snarum, Buskerud, Norway. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species