Tom Loomis's Image Gallery

Gabrielsonite: PbFe++(AsO4)(OH)

Comments: Jet black, lustrous crystal grain, showing no faces, fractured to about 0.75mm with white pectolite-hematite matrix.
Location: Langban, Varmland, Sweden. Scale: 2.5 x 1.5 x 1.5cm.
© Tom Loomis / Dakota Matrix

Gallite: CuGaS2

Comments: A mixture of massive high grade ore with grains of gallite (gray) occuring with germanite and renierite. Most of what can be seen is the renierite, which has reddish and purple iridescence.
Location: Tsumeb, Namibia. Scale: Picture size 1 cm.
© Tom Loomis / Dakota Matrix

Geffroyite: (Ag,Cu,Fe)9(Se,S)8

Comments: Silvery-gray grains of geffroyite to <0.5mm embedded in tan barite matrix.
Location: Moctezuma mine, Moctezuma, Sonora, Mexcio. Scale: Overall: 3 x 2 x 2 cm.
© Tom Loomis / Dakota Matrix

Gilalite: Cu5Si6O17·7(H2O)

Comments: Green spherical crystals of gilalite to 0.3mm in grape-like bunches.
Location: Christmas mine, Gila Co., Arizona, USA. Scale: Picture size 5 mm.
© Tom Loomis / Dakota Matrix

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

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

Gorceixite: BaAl3(PO4)(PO3OH)(OH)6

Comments: Translucent, pseudohexagonal crystal of groceixite in matrix.
Location: Rapid Creek, Yukon, Canada. Scale: Crystal Size 3 mm.
© Tom Loomis / Dakota Matrix

Guanacoite: (Cu,Mg)2Mg2(Mg,Cu)(OH)4(H2O)4(AsO4)2

Comments: Deep blue, bladed, glassy crystals of guanacoite to 0.75mm lining vugs of arhbarite..
Location: El Guanaco Mine, Guanaco, Taltal, Antofagasta Province, Chile. Scale: Picture Size 5mm.
© Tom Loomis / Dakota Matrix

Guarinoite: (Zn,Co,Ni)6(SO4)(OH,Cl)10·5(H2O)

Comments: Pale pink microcrystalline crust of guarinoite on matrix.
Location: Cap Garonne mine, Var, France. Scale: Thumbnail.
© Tom Loomis / Dakota Matrix

Haynesite: (UO2)3(SeO3)2(OH)2·5(H2O)

Comments: Yellow tufts of haynesite.
Location: Repete mine, San Juan County, Utah, USA. Scale: Crystal size 0.5 mm.
© Tom Loomis / Dakota Matrix

Hemihedrite: Pb10Zn(CrO4)6(SiO4)2F2  
Phoenicochroite: Pb2(CrO4)O

Comments: Yellow hemihedrite crystals to 1 mm within pockets of dark red phoenicochroite crystalline aggregates on matrix.
Location: Pack Rat claim, Maricopa Co., Arizona, USA. Scale: Picture size 1.5 cm.
© Tom Loomis / Dakota Matrix

Hiarneite: (Ca,Mn,Na)2(Zr,Mn+++)5(Sb,Ti,Fe)2O16

Comments: A bright red single grain of hiarneite about 0.25mm in matrix with magnetoplumbite.
Location: Langban, Varmland, Sweden. Scale: Picture size 2 mm.
© Tom Loomis / Dakota Matrix

Holfertite: U++++++1.75TiCa0.25 O7.5(H2O)3

Comments: Yellow prismatic micro crystal of holfertite on clear topaz.
Location: Starvation Canyon, Topaz Valley, Juab Co., Utah, USA. Scale: Crystal size 0.5 mm.
© Tom Loomis / Dakota Matrix

Hsianghualite: Ca3Li2Be3(SiO4)3F2

Comments: White crystalline areas of hsianghualite in dark green chloritic schist(?).
Location: Xianghualing Mine, Hunan, Central South Region, China. Scale: Not Given.
© Tom Loomis / Dakota Matrix

Hubeite: Ca2Mn++Fe+++Si4O12(OH)(H2O)2  
Inesite: Ca2Mn7Si10O28(OH)2·5(H2O)

Comments: Translucent, deep root beer brown, platy hueite crystals in fan-like groups to 1mm with delicate pink laths of inesite.
Location: Fengjiashan Mine, Daye Co., Huangshi Prefecture, Hubei Province, China. Scale: Picture Size 5 mm.
© Tom Loomis / Dakota Matrix

Hureaulite: Mn5(PO3OH)2(PO4)2·4(H2O)  
Tavorite: LiFe+++(PO4)(OH)

Comments: Lime green tavorite micro crystals with pink, gemmy hureaulite.
Location: Tip Top mine, Custer Co., South Dakota, United States. Scale: Picture size 1.0 cm.
© Tom Loomis / Dakota Matrix

Imiterite: Ag2HgS2

Comments: Silvery needle-like wire crystals of imiterite with rounded tips to 0.5 to .75mm in vuggy calcite.
Location: Imiter mine, Anti-Atlas Mts., Dades Region, Morocco. Scale: Picture size 0.5 cm.
© Tom Loomis / Dakota Matrix

Inesite: Ca2Mn7Si10O28(OH)2·5(H2O)  
Hubeite: Ca2Mn++Fe+++Si4O12(OH)(H2O)2

Comments: Translucent, deep root beer brown, platy hueite crystals in fan-like groups to 1mm with delicate pink laths of inesite.
Location: Fengjiashan Mine, Daye Co., Huangshi Prefecture, Hubei Province, China. Scale: Picture Size 5 mm.
© Tom Loomis / Dakota Matrix

Ingersonite: Ca3Mn++Sb+++++4O14

Comments: Yellowish green crystals of ingersonite to about 0.7mm embedded in matrix rich in dark grains of flipstadite.
Location: Langban, Varmland, Sweden. Scale: 14x10x6mm.
© Tom Loomis / Dakota Matrix

Jahnsite-(CaMnMn): CaMn++Mn++2Fe+++2(PO4)4(OH)2·8(H2O)

Comments: Brown grains of jahnsite-(CaMnMn) in matrix.
Location: Bendada Quarry, Belmonte, Beira Alta, Portugal. Scale: Picture size 1 cm.
© Tom Loomis / Dakota Matrix

Jinshajiangite: Na2K5BaCa(Fe,Mn)8(Ti,Fe,Nb,Zr)4Si8O32(O,F,H2O)6

Comments: Reddish elongated junshajiangite grain to 0.3mm in matrix.
Location: Norra Karr, Sweden. Scale: Picture size 5 mm.
© Tom Loomis / Dakota Matrix