Mineral Specimen and Product Inventory Search
SOLD
- Availability
- Sold
- Locality
- Grants dist., Valencia Co., New Mexico, United States
- Formula
- Mg2(UO2)(CO3)3(H2O)12ยท6H2O
- Size
- 5.5 x 4.5 x 1.5 cm - Sm Cabinet
- Tagged
- carbonate
- Special Info
- Radioactive!!
Granular to crude crystals in groups to 5mm. Excellent specimen.
SOLD
- Availability
- Sold
- Locality
- Silver Crater mine, Bancroft, Ontario, Canada
- Formula
- (Ca,Na,U)2(Ti, Nb,Ta)2O6Z(OH)
- Size
- 2 x 1.5 x 1.8 cm - Thumbnail
- Special Info
- Radioactive!!
A double - two crystals. The smaller one is 1.1cm.
- Availability
- Available
- Price
- $75.00
- Locality
- Silver Crater mine, Bancroft, Ontario, Canada
- Formula
- A2(Ti,Nb)2O6Z
- Size
- 2 x 2 x 2 cm - Thumbnail
- Special Info
- Radioactive!!
Once known simply as the mineral species, Betafite, now in a complex mineral group called the Betafite group, which belongs to the super group of Pyrochlores with a complicated nomenclature. Compositionally, Betafites are oxides of titanium and niobium with variable subtitutions of cations uranium and calcium in the A position and variable amounts of anions O, OH, H2O, or F in the Z position.
This specimen, like the others show the cubic and octahedral forms with sharp edges.
- Availability
- Available
- Price
- $45.00
- Locality
- Silver Crater mine, Bancroft, Ontario, Canada
- Formula
- (Ca,Na,U)2(Ti, Nb,Ta)2O6Z(OH)
- Size
- 1.5 x 1.5 x 1.5 cm - Thumbnail
- Special Info
- Radioactive!!
Smaller crystal with black faces.
- Availability
- Available
- Price
- $50.00
- Reduced Price
- $30.00
- Locality
- Silver Crater mine, Bancroft, Ontario, Canada
- Formula
- (Ca,Na,U)2(Ti, Nb,Ta)2O6Z(OH)
- Size
- 2 x 2 x 1.7 cm - Thumbnail
- Special Info
- Radioactive!!
Single crystal with interesting "hopper" growth on some faces.
- Availability
- Available
- Price
- $25.00
- Locality
- Namib Desert, Namibia
- Formula
- CaBi2O2(CO3)2
- Size
- 1.5 x 1.2 x 0.8 cm - Thumbnail
Light yellow powdery to crystalline crust.
