Mike Davis' Photo Gallery

F0X-RG5Cuprosklodowskite Cu(UO₂)₂(SiO₃OH)₂·6H₂O

Musonoi Mine, Kolwezi, Mutshatsha, Lualaba, DR Congo

Dimensions: 45 mm x 50 mm x 38 mm

Cuprosklodowskite: Cu(UO2)2Si2O7 - 6H2O, Hydrated Copper Uranyl Silicate.

Green flower of cuprosklodowskite on matrix.

Cuprosklodowskite is a rare uranium mineral formed from the oxidation of copper and uranium-bearing minerals.

Named in the mistaken belief that it was the copper analogue of Sklodowskite, which in turn was named for Marie Curie (née Maria Sklodowska), (1867 - 1934), 1903 Nobel Laureate in Physics, and 1911 Nobel Laureate in Chemistry.

Activity: microSieverts/hour: 13.6 (1 gram, fully aged).

A beautiful piece that, sadly, has to live outdoors.

3QW-7HWDavidite-(La) La(Y,U)Fe₂(Ti,Fe,Cr,V)₁₈(O,OH,F)₃₈ , Carnotite K₂(UO₂)₂(VO₄)₂·3H₂O

Radium Hill Mine, Radium Hill area, Olary Province, South Australia, Australia

Dimensions: 20 mm x 20 mm x 18 mm

Dark reddish-brown/black davidite (LA) with yellow (some green) carnotite from the type locality for this mineral.

Typical size of pieces shown: 20mm x 20mm x 18mm.

Unusually attractive examples type locality davidite.

Davidite is named for: Tenatt William Edgeworth David (1858-1934), Australian
geologist.

The yellow carnotite is a potassium uranium vanadate mineral, named for the French mining engineer and chemist, Marie Adolphe Carnot (1839 - 1920).

N4T-61WSteenstrupine-(Ce) Na₁₄Mn²⁺₂Fe³⁺₂Ce₆Zr(Si₆O₁₈)₂(PO₄)₆(PO₃OH)(OH)₂·2H₂O , Serandite NaMn²⁺₂Si₃O₈(OH) , Vuonnemite Na₁₁Ti⁴⁺Nb₂(Si₂O₇)₂(PO₄)₂O₃(F,OH)

Alluaiv Mountain, Lovozersky District, Murmansk Oblast, Russia

Dimensions: 35 mm x 30 mm x 22 mm

Dark grey, coarse grained, elongated crystals of steenstrupine (Ce) with Serandite & Vuonnemite.

35mm x 30mm x 22mm

XRQ-HQNCalcite CaCO₃ , Marcasite FeS₂

Bülten-Adenstedt Mine, Ilsede, Peine District, Lower Saxony, Germany

Dimensions: 65 mm x 90 mm x 40 mm

Narrow, creamy-whitish carbonate layer (calcite probably with manganese content) covering the walls of a vug, accompanied by marcasite aggregates.

Kaiser-Wilhelm shaft II, Buelten-Adenstedt Mine, Gross-Buelten, Lower Saxony, Germany. (1960s)

Ex-Paul Hanses Collection.

Specimen size: 65mm x 90mm x 40mm

7EN-VG1Vandenbrandeite Cu(UO₂)(OH)₄

Kalongwe deposit, Mutshatsha, Lualaba, DR Congo

Dimensions: 25 mm x 21 mm x 12 mm

Copper-uranyl-hydroxide named for the Belgian geologist Pierre Van den Brande. Also called uranolepidite.
The matrix of this specimen is host for a 1 cm large cluster of dark green tabular vandenbrandeite.