American Mineralogist's Image Gallery

Schreyerite: V+++2Ti3O9

Comments: SEM image of schreyerite crystal studied by single-crystal X-ray diffraction. AmMin, v91, p197.
Location: Metamorphic rocks of the Sludyanka complex at the southern shore of Lake Baikal, Russia. Scale: Picture width 0.14 mm.
© American Mineralogist

Schreyerite: V+++2Ti3O9

Comments: SEM image of schreyerite crystal studied by single-crystal X-ray diffraction. AmMin, v91, p197.
Location: Metamorphic rocks of the Sludyanka complex at the southern shore of Lake Baikal, Russia. Scale: Picture width 0.14 mm.
© American Mineralogist

Serrabrancaite: MnPO4·(H2O)

Comments: SEM micrograph of dark brown to dark greenish black isometric crystals of serrabrancaite up to 0.3 mm size. (AmMin, 85:848).
Location: Alto Serra Branca pegmatite near Pedra Lavrada, Paraiba, Brazil. Scale: See Image.
© American Mineralogist

Serrabrancaite: MnPO4·(H2O)

Comments: SEM micrograph of dark brown to dark greenish black isometric crystals of serrabrancaite up to 0.3 mm size. (AmMin, 85:848).
Location: Alto Serra Branca pegmatite near Pedra Lavrada, Paraiba, Brazil. Scale: See Image.
© American Mineralogist

Shirozulite: KMn3(AlSi3)O10(OH,F)2

Comments: Back-scattered-electron image of shirozulite. Shr = shirozulite; Tp = tephroite; Ap = apatite; Rds = rhodochrosite; Bm = bementite. (AmMin, 89:233).
Location: Tauchi mine, Aichi Prefecture, Japan. Scale: See Image.
© American Mineralogist

Shirozulite: KMn3(AlSi3)O10(OH,F)2

Comments: Back-scattered-electron image of shirozulite. Shr = shirozulite; Tp = tephroite; Ap = apatite; Rds = rhodochrosite; Bm = bementite. (AmMin, 89:233).
Location: Tauchi mine, Aichi Prefecture, Japan. Scale: See Image.
© American Mineralogist

Silicon: Si  
Moissanite: SiC

Comments: Backscattered electron image of metallic inclusion in moissanite (SiC). The gray shading in the BSE mage consists mainly of pure silicon (Si metal). The brighter areas are composed of Fe-silicide. (AmMin, 88:1818).
Location: Found in a cobble at a beach along the Turkish coast of the Mediterranean Sea, around 150 km NW from Izmir, and is most likely derived from Tertiary volcanic rocks outcropping in the area. Scale: Scalebar 200 µ-m.
© American Mineralogist

Silicon: Si  
Moissanite: SiC

Comments: Backscattered electron image of metallic inclusion in moissanite (SiC). The gray shading in the BSE mage consists mainly of pure silicon (Si metal). The brighter areas are composed of Fe-silicide. (AmMin, 88:1818).
Location: Found in a cobble at a beach along the Turkish coast of the Mediterranean Sea, around 150 km NW from Izmir, and is most likely derived from Tertiary volcanic rocks outcropping in the area. Scale: Scalebar 200 µ-m.
© American Mineralogist

Simmonsite: Na2LiAlF6

Comments: Backscattered electron images of primary assemblage of cryolite-cryolithionite (cl) simmonsite (sm) and trace elpasolite (ep). (AmMin, v 84, p 770).
Location: Zapot amazonite-topaz-zinnwaldite pegmatite located in the Gillis Range, Mineral Co., Nevada, USA. Scale: See Image.
© American Mineralogist

Simmonsite: Na2LiAlF6

Comments: Backscattered electron images of primary assemblage of cryolite-cryolithionite (cl) simmonsite (sm) and trace elpasolite (ep). (AmMin, v 84, p 770).
Location: Zapot amazonite-topaz-zinnwaldite pegmatite located in the Gillis Range, Mineral Co., Nevada, USA. Scale: See Image.
© American Mineralogist

Sorosite: Cu(Sn,Sb)  
Tin: Sn  
Stistaite: SnSb

Comments: Back-scattered electron image of large sorosite crystal (So=partly skeletal) adjacent to stistaite (St). Tn=native tin. Note abundant microcrystals of sorosite isolated within native tin. (AmMin 83:903).
Location: Baimka gold-platinum group mineral placer deposit, Chukotka, Russian Far East. Scale: Image Size 1.5 cm.
© American Mineralogist

Sorosite: Cu(Sn,Sb)  
Tin: Sn  
Stistaite: SnSb

Comments: Back-scattered electron image of large sorosite crystal (So=partly skeletal) adjacent to stistaite (St). Tn=native tin. Note abundant microcrystals of sorosite isolated within native tin. (AmMin 83:903).
Location: Baimka gold-platinum group mineral placer deposit, Chukotka, Russian Far East. Scale: Image Size 1.5 cm.
© American Mineralogist

Spriggite: Pb3[(UO2)6O8(OH)2](H2O)x; x ~ 3

Comments: Secondary electron microscope image of spriggite crystals and twins. (AmMin, 89:341).
Location: Number 2 workings, Radium Ridge, Northern Flinders Ranges, South Australia. Scale: See Image.
© American Mineralogist

Spriggite: Pb3[(UO2)6O8(OH)2](H2O)x; x ~ 3

Comments: Secondary electron microscope image of spriggite crystals and twins. (AmMin, 89:341).
Location: Number 2 workings, Radium Ridge, Northern Flinders Ranges, South Australia. Scale: See Image.
© American Mineralogist

Srilankite: (Ti,Zr)O2

Comments: Backscatter electron image of srilankite (Sri) - rutile (Rt) - ilmenite (Ilm) composite grain (AmMin, v 89, p 761).
Location: Atlantis II Fracture Zone, Southwest Indian Ridge, Southern Indian Ocean. Scale: See Image.
© American Mineralogist

Srilankite: (Ti,Zr)O2

Comments: Backscatter electron image of srilankite (Sri) - rutile (Rt) - ilmenite (Ilm) composite grain (AmMin, v 89, p 761).
Location: Atlantis II Fracture Zone, Southwest Indian Ridge, Southern Indian Ocean. Scale: See Image.
© American Mineralogist

Stornesite-(Y): (Y, Ca)[ ]2Na6(Ca,Na)8(Mg,Fe)43(PO4)36

Comments: BSE image of stornesite-(Y) (Sto) partially surrounding a spherical quartz(Qz)-biotite(Bt) aggregate in apatite (Ap). Other mineral phases include xenotime (Xnt), sillmanite Sil) and corderite (Crd). AmMin, v91, p 1416.
Location: Paragneiss specimens from Johnston Fjord, Stornes Peninsula, Antarctica. Scale: See Image.
© American Mineralogist

Stornesite-(Y): (Y, Ca)[ ]2Na6(Ca,Na)8(Mg,Fe)43(PO4)36

Comments: BSE image of stornesite-(Y) (Sto) partially surrounding a spherical quartz(Qz)-biotite(Bt) aggregate in apatite (Ap). Other mineral phases include xenotime (Xnt), sillmanite Sil) and corderite (Crd). AmMin, v91, p 1416.
Location: Paragneiss specimens from Johnston Fjord, Stornes Peninsula, Antarctica. Scale: See Image.
© American Mineralogist

Suessite: (Fe,Ni)3Si

Comments: B&W image of suessite (white) as vein fillings and blebs. Silicates (olivine, pigeonite) are gray; carbonaceous matrix is black. Hydrous ferric oxide veins are (light gray).
Location: North Haig olivine pigeonite achondrite (ureilite). (AmMin, v67:126). Scale: Scale Bar 100 µm.
© American Mineralogist

Suessite: (Fe,Ni)3Si

Comments: B&W image of suessite (white) as vein fillings and blebs. Silicates (olivine, pigeonite) are gray; carbonaceous matrix is black. Hydrous ferric oxide veins are (light gray).
Location: North Haig olivine pigeonite achondrite (ureilite). (AmMin, v67:126). Scale: Scale Bar 100 µm.
© American Mineralogist