Paul M. Schumacher's Image Gallery

Andersonite: Na2Ca(UO2)(CO3)3·6(H2O)

Comments: Veins of bright yellowish green, andersonite in sandstone. The fluorescence of this mineral is noticeable under ambient office lighting plus a UV lamp.
Location: Atomic King Mine, Cane Creek Canyon, Grand County, Utah, USA. Scale: Specimen size 6 cm.
© Paul M. Schumacher

Astrocyanite-(Ce): Cu2(Ce,Nd,La)2(UO2)(CO3)5(OH)2·1.5(H2O)

Comments: Blue-green bladed astrocyanite-(Ce) crystals on black uraninite ore. Schumacher Collection.
Location: Kamoto East Open cut, Kamoto, Kolwezi, Western area, Shaba Cu belt, Shaba (Katanga), Congo (Zaïre). Scale: Picture size 2 cm.
© Paul M. Schumacher

Autunite: Ca(UO2)2(PO4)2·10-12(H2O)  
Meta-autunite: Ca(UO2)2(PO4)2·2-6(H2O)

Comments: Corner of a meta-autunite crystal showing the dehydration of autunite (dark green) to meta-autunite (lighter yellowish green)..
Location: Daybreak Mine, Spokane County, Washington, U.S.A.. Scale: See Image.
© Paul M. Schumacher

Bayleyite: Mg2(UO2)(CO3)3·18(H2O)

Comments: Stellate aggregates of pale greenish white, acicular bayleyite crystals on a gossanous matrix with white, snowy aragonite.
Location: Hideout #1 mine, White Canyon district, San Juan County, Utah, USA. Scale: Picture size 3.5 mm.
© Paul M. Schumacher

Bayleyite: Mg2(UO2)(CO3)3·18(H2O)

Comments: Stellate aggregates of acicular bayleyite crystals under short wave UV light showing pale green fluorescence.
Location: Hideout #1 mine, White Canyon district, San Juan County, Utah, USA. Scale: Picture size 3.5 mm.
© Paul M. Schumacher

Bergenite: Ca2Ba4[(UO3)2O2(PO4)2]3 (H2O)16

Comments: Bladed, radial aggregates of yellow bergenite crystals on matrix.
Location: Bergen, Falkenstein, Vogtland, Saxony, Germany. Scale: Picture size 2.5 mm.
© Paul M. Schumacher

Betafite: (Ca,U)2(Ti,Nb,Ta)2O6(OH)

Comments: Brown hexoctahedral crystal of betafite on greenish apatite crystals.
Location: Silver Crater Mine, Bancroft, Ontario, Canada. Scale: 2-1/4 cm across.
© Paul M. Schumacher

Blatonite: UO2CO3·(H2O)

Comments: Acicular, yellow blatonite crystals with white aragonite on matrix.
Location: Jomac Mine, White Canyon,White Canyon District (White Canyon), San Juan Co., Utah, USA. Scale: Picture size 6 mm.
© Paul M. Schumacher

Boltwoodite: HK(UO2)(SiO4)·1.5(H2O)

Comments: Bright yellow, prismatic crystals of boltwoodite.
Location: Rössing mine, Swakopmund District, Namibia. Scale: Picture size 2.5 mm.
© Paul M. Schumacher

Britholite-(Ce): (Ce,Ca,Th,La,Nd)5(SiO4,PO4)3(OH,F)

Comments: Dark gray, parallel aggregates of britholite-(Ce) crystals in matix..
Location: Rusty Gold Mine, Jamestown District, Boulder Co., Colorado, USA. Scale: See Image.
© Paul M. Schumacher

Cheralite-(Ce): (Ce,Ca,Th)(P,Si)O4

Comments: Brown to tan, massive cheralite-(Ce) showing cleavage traces.
Location: Uranium King Mine, Trent Creek, Encampment Copper District, Sierra Madre Mts., Carbon Co., Wyoming, USA. Scale: Picture size 1.4 cm.
© Paul M. Schumacher

Ciprianiite: Ca4[(Th,U)(REE)]2(Al,[ ])2[Si4B4O22](OH,F)2

Comments: Black crystal of ciprianiite in quartz.
Location: Monte Cavalluccio, Capagnano, Roma, Lazio, Italy. Scale: Picture size 2 mm.
© Paul M. Schumacher

Coconinoite: Fe+++2Al2(UO2)2(PO4)4(SO4)(OH)2·18(H2O)

Comments: Dull, putty-colored clay-like mass of coconinoite on a sandstone matrix.
Location: Jomas mine, White Canyon, San Juan County, Utah, USA. Scale: Picture size 1.2 cm.
© Paul M. Schumacher

Coffinite: U(SiO4)1-x(OH)4x

Comments: Black, interstitial coffinite cementing a sub-angular quartzose sandstone. Schumacher Collection.
Location: Temple Mountain, San Rafael District (San Rafael Swell), Emery Co., Utah, USA. Scale: Picture size 5 mm.
© Paul M. Schumacher

Columbite-(Fe): Fe++Nb2O6

Comments: Dark, coaly black, weathered granular ferrocolumbite. This specimen was originally identified as samarskite-(Y) and corrected by Fred Davis who studied the locality.
Location: Spinelli Samarskite Prospect, Glastonbury, Hartford Co., Connecticut, USA. Scale: Picture size 4 mm.
© Paul M. Schumacher

Cuprosklodowskite: Cu[(UO2)(SiO2OH)]2·6(H2O)

Comments: Green, acicular cuprosklodowskite crystals.
Location: Mashamba West Mine, Kolwezi, Shaba (Katanga), Congo (Zaïre). Scale: Picture size 3 mm.
© Paul M. Schumacher

Demesmaekerite: Pb2Cu5(UO2)2(SeO3)6(OH)6·2(H2O)

Comments: Tabular, light green and spear-shaped dark greenish brown demesmaekerite crystals.
Location: Musonoi mine, Kolwezi, Shaba (Katanga), Congo (Zaïre). Scale: Picture size 3 mm.
© Paul M. Schumacher

Dewindtite: Pb3[H(UO2)3O2(PO4)2]2·12(H2O)

Comments: Yellow dewindtite exposed on fracture surface. Schumacher Collection.
Location: Les Bois-Noirs Mine, Loire, Rhône-Alpes, France. Scale: Picture size 5 mm.
© Paul M. Schumacher

Francevillite: (Ba,Pb)(UO2)2V2O8·5(H2O)  
Mounanaite: PbFe+++2(VO4)2(OH)2

Comments: Stout, yellow, transparent, prismatic, striated crystals of francevillite on brownish red mounanaite matrix.
Location: Mounana mine, Franceville, Haut-Ogooué, Gabon. Scale: Picture size 1.5 cm.
© Paul M. Schumacher

Graphite: C

Comments: Black, sub-hexagonal crystal of graphite in calcite.
Location: Lead Hill Mine, (near Ticonderoga), Essex Co., New York, USA. Scale: Crystal size 1 mm.
© Paul M. Schumacher