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- Availability
- Available
- Price
- $40.00
- Locality
- Sapper Fumarole, El Palmar, Quetzaltenango, Guatemala
- Formula
- NaAl(SO4)2·12H2O
- Size
- 3.5 x 3.5 x 2.5 cm - Miniature
Spherules of white to colorless Alum-(Na) in a spongy, very light weight matrix. I have no idea what this matrix is.
- Availability
- Sold
- Locality
- Limes, Val Daone, Trento, Trentino Alto Adige, Italy
- Formula
- Y(UO2)3(SO4)2O(OH)3(H2O)7 · 7H2O
- Size
- 3.3 x 2.2 x 1.3 cm - Miniature
- Tagged
- REE mineral
- Special Info
- Radioactive!!
- Special Info
- Type Locality
Bright yellow microscopic needles in nestled aggregates. Alwilkinsite-(Y) is named in honor of Al Wilkins, who discovered the mineral at the Blue Lizard mine, the original locality. This is the second reported locality.
- Availability
- Available
- Price
- $15.00
- Locality
- Griessertal, Switzerite
- Formula
- AX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O) 2
- Size
- Thumbnail
Fibrous green Actinolite.
- Availability
- Sold
- Locality
- Homestake mine, Lawrence Co., South Dakota, United States
- Formula
- TiO2
- Size
- 9.5 x 8 x 3 cm - Cabinet
About 1mm euhedral Anatase crystals scattered across matrix with Quartz and Dolomite. The reverse side is all white Dolomite crystals to 8mm.
- Availability
- Sold
- Locality
- Homestake mine, Lawrence Co., South Dakota, United States
- Formula
- TiO2
- Size
- 8 x 5 x 5 cm - Sm Cabinet
1mm Anatase crystals scattered on a matrix of Dolomite (crystals) and Pyrite.
- 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.