Search Archived Mineral Specimens
- Availability
- Sold
- Locality
- Big Rock quarry, Little Rock, Pulaski Co., Arkansas, United States
- Formula
- Na2(Si3Al2)O10·2H2O
- Size
- Cabinet 11x6x5cm
- Tagged
- zeolite
Large 1-2cm colorless and superb crystals of Natrolite in open fracture with free-standing Aegerine. Excellent specimen, one-time find.
- Availability
- Sold
- Locality
- Big Rock quarry, Little Rock, Pulaski Co., Arkansas, United States
- Formula
- Na2(Si3Al2)O10·2H2O
- Size
- Cabinet 10x5x5cm
Awesome specimen with incredible sprays of Natrolite crystals to 6mm on and with colorless to white Analcime. Excellent specimen.
- Availability
- Sold
- Locality
- 3M quarry, Little Rock, Pulaski Co., Arkansas, United States
- Formula
- Na2(Si3Al2)O10·2H2O
- Size
- Cabinet 18x8x8cm
Excellent and colorless crystals of Natrolite crystals to to 8mm with scattered Aegerine needles to 7mm. Very cool specimen.
- Availability
- Sold
- Locality
- Tanohata mine, Tohoku Region, Honshu Island, Japan
- Formula
- NaMn2+4Si5O14(OH)
- Size
- Miniature 4x4.5x3cm
- Special Info
- Type Locality
Deep root beer red blocky crystals to 2mm.
- Availability
- Sold
- Locality
- Tanohata mine, Tohoku Region, Honshu Island, Japan
- Formula
- NaMn2+4Si5O14(OH)
- Size
- Thumbnail 2.2x1.8x1cm
- Special Info
- Type Locality
Orange, granular Natronambulite with one very nice gemmy crystal to about 1mm associated with crystalline Rhodonite.
- Availability
- Sold
- Locality
- Rodalquilar, Níjar, Almería, Andalusia, Spain
- Formula
- NaAl4(AsO4)3(OH)4·4H2O
- Size
- Thumbnail 3x2.5x2.2cm
- Tagged
- arsenate
Exceptional yellow to colorless cubic crystals from 0.3 to 0.5mm. As seen, there are numerous crystals of this very rare arsenate.
