Tom Loomis's Image Gallery

Sanbornite: BaSi2O5  
Bigcreekite: BaSi2O5·4(H2O)  
Gillespite: BaFe++Si4O10

Comments: Tiny white, spherical patterns, halo-like crystals of bigcreekite to about 0.5mm and reddish gillespite in a matrix of pale yellowish sanbornite.
Location: Trumbull Peak, Mariposa Co., California, United States. Scale: 2.5 x 2 x 2cm.
© Tom Loomis / Dakota Matrix

Sanromanite: Na2CaPb3(CO3)5  
Juangodoyite: Na2Cu(CO3)2  
Chalconatronite: Na2Cu(CO3)2·3(H2O)

Comments: Yellowish, long balded sanromanite crystals in vug with platy, blue juangodoyite replacing green chalconatronite.
Location: Santa Rosa mine, Iquique Province, Tarapaca, Chile. Scale: Picture size 3 mm.
© Tom Loomis / Dakota Matrix

Santarosaite: CuB2O4

Comments: Druzy rosettes of blue santarosaite on matrix.
Location: Santa Rosa mine, Iquique Province, Chile. Scale: Rosette Size 0.3 mm.
© Tom Loomis / Dakota Matrix

Scandiobabingtonite: Ca2(Fe++,Mn)ScSi5O14(OH)

Comments: Green micro crystals of scandiobabingtonite to about 0.75mm with several grayish brown ball-like micro crystals of titanite to 0.75mm scattered in a large vug.
Location: Heftetjern pegmatite, Tørdal, Drangedal, Telemark, Norway. Scale: Picture size 2.5 mm.
© Tom Loomis / Dakota Matrix

Schaurteite: Ca3Ge++++(SO4)2(OH)6·3(H2O)

Comments: Snow white acicular crystals of schauteite to about 1mm in a matted mass.
Location: Tsumeb mine, Tsumeb, Namibia. Scale: Picture size 5 mm.
© Tom Loomis / Dakota Matrix

Schiavinatoite: (Nb,Ta)BO4

Comments: Black, 3mm euhedral crystal of schiavinatoite in matrix.
Location: Ampanodiana Sud, Tetezantsio, Mahaiza, Madagascar. Scale: 3x2x2cm.
© Tom Loomis / Dakota Matrix

Schoonerite: Fe++2ZnMnFe+++(PO4)3(OH)2·9(H2O)  
Ernstite: (Mn++1-xFe+++x)Al(PO4)(OH)2-xOx

Comments: 1 mm honey brown, acicular, radial sprays of ernstite with light green fibrous schoonerite and apatite in siderite.
Location: White Cap mine, Pennington County., South Dakota. Scale: Picture size 3 mm.
© Tom Loomis / Dakota Matrix

Senarmontite: Sb2O3

Comments: Perfect octahedral, transparent, light to dark gray senarmontite crystals to 3mm.
Location: Djebel Haminate mine, Ain Beida, Constantine, Algeria. Scale: Pictrure size 1.5 cm.
© Tom Loomis / Dakota Matrix

Sewardite: CaFe+++2(AsO4)2(OH)2

Comments: Deep red, micaceous sewardite crystals mistakenly identified as carminite.
Location: Benjamin Hill, Sonora, Mexico. Scale: Picture size 1 cm.
© Tom Loomis / Dakota Matrix

Shattuckite: Cu5(SiO3)4(OH)2

Comments: Blue micro acicular or fibrous crystals of shattuckite to 0.1mm free standing in vug.
Location: New Cornelia mine, Pima Co., Arizona, USA. Scale: Picture size 2.5 mm.
© Tom Loomis / Dakota Matrix

Shortite: Na2Ca2(CO3)3

Comments: Triangular shortite crystal in kerogenaceous dolomitic marlstone from the saline zone in the Green River Formation.
Location: Green River, Sweetwater Co., Wyoming, USA. Scale: Crystal Size 2 mm.
© Tom Loomis / Dakota Matrix

Sincosite: Ca(V++++O)2(PO4)2·5(H2O)  
Minyulite: KAl2(PO4)2(OH,F)·4(H2O)

Comments: Pale greenish white acicular radial sprays of minyulite to 8mm with small, green, tabular sincosite.
Location: Ross Hannibal mine, Lawrence County, South Dakota. Scale: Picture size 2 cm.
© Tom Loomis / Dakota Matrix

Sincosite: Ca(V++++O)2(PO4)2·5(H2O)

Comments: Tabular single crystals of sincosite to 2 mm on drusy quartz.
Location: Ross Hannibal Mine, Lawrence Co., South Dakota, USA. Scale: Picture size 1.5 cm.
© Tom Loomis / Dakota Matrix

Sinkankasite: H2MnAl(PO4)2(OH)·6(H2O)

Comments: White crystalline spray of acicular sinkankasite to 1mm on matrix.
Location: Barker mine, Keystone, Pennington County, South Dakota, USA. Scale: Picture size 5 mm.
© Tom Loomis / Dakota Matrix

Sohngeite: Ga(OH)3

Comments: Minute, pale yellow sohngeite crystals to less than 0.2mm on matrix.
Location: Tsumeb mine, Tsumeb , Namibia. Scale: Picture size 3 mm.
© Tom Loomis / Dakota Matrix

Sonolite: Mn9(SiO4)4(OH,F)2

Comments: Dark red anhedral grains of sonolite in matrix.
Location: Crouse mine, Bald Knob, Alleghany Co., North Carolina, USA. Scale: Crystal size 0.75 mm.
© Tom Loomis / Dakota Matrix

Sorensenite: Na4SnBe2Si6O18·2(H2O)

Comments: Lght pink, prismatic crystals of sorensite to 5mm in dark green aegerine matrix.
Location: Kvanefjeld, Ilimaussaq, Greenland. Scale: Picture size 1 cm.
© Tom Loomis / Dakota Matrix

Sperrylite: PtAs2

Comments: Brilliant, mirror-like modified octahedral crystals of sperrylite to 1.3 cm on chalcopyrite matrix..
Location: Talnak deposit, near Noril'sk, Russia. Scale: 4.4 x 2.3 x 2cm.
© Tom Loomis / Dakota Matrix

Stannomicrolite: (Sn++,Fe++,Mn++)(Ta,Nb,Sn++++)2(O,OH)7  
Stokesite: CaSnSi3O9·2(H2O)

Comments: Stokesite "ball" composed of lath-like tan or clear crystals with several micro crystals of yellow stannomicrolite.
Location: Urucum mine, Galileia, Minas Gerais, Brazil. Scale: 1.2 cm.
© Tom Loomis / Dakota Matrix

Stetefeldtite: Ag2Sb2O6(O,OH)

Comments: Light yellow, massive, earthy stetefeldtite aggregates.
Location: Snyder Hill Mine, Tucson Mountains, Pima Co., Arizona, USA. Scale: 2.5x2x1cm.
© Tom Loomis / Dakota Matrix