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- 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
- 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.