Rare Mineral Specimens - search page
- Availability
- Available
- Price
- $60.00
- Reduced Price
- $30.00
- Locality
- Rawhide mine, Mohave Co., Arizona, United States
- Formula
- PbSiO3
- Size
- 3.5 x 2.5 x 3 cm - Miniature
Pearly white micro crystals and rounded spheres.
- Availability
- Available
- Price
- $35.00
- Locality
- Coal Hill Lead vein, Rossie, St. Lawrence Co., New York, United States
- Formula
- TiO2
- Size
- 3 x 2.5 x 2 cm - Thumbnail
Translucent blue crystals less than 1mm with a unique square termination.
- Availability
- Available
- Price
- $30.00
- Locality
- Hingston Down quarry, Gunnislake, Cornwall, England
- Formula
- CuFe3+2(AsO4)2(OH)2ยท4H2O
- Size
- 1.5 x 0.7 x 0.8 cm - Thumbnail
- Tagged
- arsenate, copper
- Special Info
- Type Locality
Small but excellent specimen from the type locality.
- Availability
- Available
- Price
- $25.00
- Locality
- Bakstevalåsen, Gunhildrud, Øvre Eiker, Buskerud, Norway
- Formula
- K2NaFe2+7Ti2(Si4O12)2O2(OH)4F
- Size
- 5 x 4 x 3.5 cm - Miniature
Reddish brony balded crystals to 3cm in Quartz.
- Availability
- Available
- Price
- $125.00
- Reduced Price
- $75.00
- Locality
- Bombay, Maharashta, India
- Formula
- Ca2Fe2+Fe3+Si5O14(OH)
- Size
- 6 x 2.5 x 2.5 cm - Sm Cabinet
Gorgeous, large, Babingtonite crystal to a whopping 1.7cm on spheroidal Prehnite with Quartz crystals.
- 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.
