Tom Loomis's Image Gallery

Cacoxenite: (Fe+++,Al)25(PO4)17O6(OH)12·75(H2O)

Comments: Radial, spherical individual crystal sprays of brownish yellow cacoxenite.
Location: El Horcajo (Ciudad Real), Spain. Scale: 0.5 mm diameter.
© Tom Loomis / Dakota Matrix

Cacoxenite: (Fe+++,Al)25(PO4)17O6(OH)12·75(H2O)  
Strengite: Fe+++PO4·2(H2O)

Comments: Lilac colored, spear-head shape crystals of strengite to 5mm in large, open vug associated with golden fibrous cacoxenite.
Location: Coon Creek, Polk Co., Arkansas, USA. Scale: Picture size 2 cm.
© Tom Loomis / Dakota Matrix

Carbonatecyanotrichite: Cu++4Al2(CO3,SO4)(OH)12·2(H2O)

Comments: Bright blue micro crystals of carbonate-cyanotrichite on matrix.
Location: Widowmaker mine, Fry Canyon, San Juan Co., Utah, USA. Scale: Crystal size 0.1 mm.
© Tom Loomis / Dakota Matrix

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

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

Chayesite: K(Mg,Fe++)4Fe+++(Si12O30)

Comments: Crystalline aggregate of rusty red, thin tabular hexagonal plates of chayesite stacked along the c-axis on matrix.
Location: Pauliberg Mt., Kobersdorf, Oberpullendorf, Burgenland, Austria. Scale: Crystal size 0.5 mm.
© Tom Loomis / Dakota Matrix

Chiavennite: CaMnBe2Si5O13(OH)2·2(H2O)

Comments: Prismatic micro crystals of chiavennite less than 1mm.
Location: Ute, Sweden. Scale: Picture size 1 cm.
© Tom Loomis / Dakota Matrix

Childrenite: Fe++Al(PO4)(OH)2·(H2O)

Comments: Light-brown, acicular, divergent sprays of childrenite.
Location: Rapid Creek, Yukon, Canada. Scale: Picture size 1 cm.
© Tom Loomis / Dakota Matrix

Clinobisvanite: BiVO4

Comments: Deep yellow platy crystals of clinobisvanite to less than 0.2mm.
Location: Linka mine, Lander Co., Nevada, USA. Scale: Picture size 0.5 cm.
© Tom Loomis / Dakota Matrix

Clinoclase: Cu3(AsO4)(OH)3

Comments: Divergent, elongated, bladed blue crystals of clinoclase to 1mm on matrix.
Location: Majuba Hill mine, Pershing Co., Nevada, USA. Scale: Picture size 5x7 mm.
© Tom Loomis / Dakota Matrix

Conichalcite: CaCu(AsO4)(OH)  
Barahonaite-(Fe): (Ca,Cu,Na,Fe+++,Al )12Fe+++2(AsO4)8(OH,Cl)x·nH2O

Comments: Micro yellow, platy barahonaite-(Fe) crystals associated with green "beads" of conichalcite, yellowish, earthy arseniosiderite and micro olivenite crystals.
Location: Dolores prospect near the village of Pastrana, in the Province of Murcia of southeastern Spain. Scale: Specimen Size 6 x 4 x 2 cm.
© Tom Loomis / Dakota Matrix

Coombsite: K(Mn++,Fe++,Mg)13(Si,Al)18O42(OH)14

Comments: Sawed slab with brownish veining in pink (?) matrix.
Location: Watson's Beach, Otago, South Island,, New Zealand. Scale: 3x2cm x 5mm.
© Tom Loomis / Dakota Matrix

Cordierite: Mg2Al4Si5O18

Comments: Piece of near-gem-quality glassy gray-blue cordierite with some yellowish internal reflections.
Location: Mt. Bity District, Madagascar. Scale: Overall: 2 x 1 x 1.5 cm.
© Tom Loomis / Dakota Matrix

Coutinhoite: ThxBa1-2x(H2O)y(UO2)2Si5O13·H2O

Comments: New mineral, IMA 2003-025, from this pegmatite. This is a co-type specimen. Flaky crystals of choutinhoite to less than 0.25mm in gelatin capsule.
Location: Lavra do Urucum, Serra do Urucum, Galileia, Minas Gerais, Brazil. Scale: Crystal size 0.25mm.
© Tom Loomis / Dakota Matrix

Creaseyite: Pb2Cu2(Fe+++,Al)2Si5O17·6(H2O)

Comments: Green acicular sprays of creaseyite to 0.5mm on matrix.
Location: Rawhide mine, Mohave County, Arizona, USA. Scale: Picture size 5 mm.
© Tom Loomis / Dakota Matrix

Crossite: Na2(Mg,Fe++)3(Al,Fe+++)2Si8O22(OH)2

Comments: Long metallic, black, prismatic crystals or crossite on matrix.
Location: Webbing, Lammertal, Salzburg, Austria. Scale: Picture size 2.5 mm.
© Tom Loomis / Dakota Matrix

Cubanite: CuFe2S3

Comments: Brassy, lustrous, cyclic-twinned cubanite on matrix.
Location: Henderson # 2 Mine, Chibougamau, Quebec, Canada. Scale: 10x6 mm.
© Tom Loomis / Dakota Matrix

Cuprite: Cu2O

Comments: Red, acicular chalcotrichite crystals as a fine, fibrous red mass on matrix.
Location: Christmas mine, Gila Co., Arizona, USA. Scale: Picture size 5 mm.
© Tom Loomis / Dakota Matrix

Cupropearceite: [Cu6As2S7][Ag9CuS4]

Comments: Crystal of cupropearceite.
Location: Sarbay Mine, near city of Rudnyi, Kostanai Oblast', Kazakhstan. Scale: Crystal size 1 mm.
© Tom Loomis / Dakota Matrix

Cuprospinel: (Cu,Mg)Fe+++2O4

Comments: 2mm piece of from the type specimen matrix with disseminated, black cuprospinel.
Location: Consolidated Rambler mine, Baie Verte, Newfoundland, Canada. Scale: Specimen size 2 mm.
© Tom Loomis / Dakota Matrix

Dachiardite-Na: (Na2,Ca,K2)4Al4Si20O48·13(H2O)

Comments: Orange flat radial crystals of dachiardite-Na to 2cm across on matrix.
Location: Alpe di Siusi, Bolzano, Trentino Alto Adige, Italy. Scale: Specimen size: 6x4x3cm.
© Tom Loomis / Dakota Matrix