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0 item @ $0.00  

Cookeite with Quartz

#PD34652

Cookeite with Quartz

#PD34652
Availability
Sold
Size
9 x 7 x 5 cm - Sm Cabinet 
Formula
(Al,Li)3Al2(Si,Al)4O10(OH)8 (RRUFF)
Locality
Bennett quarry, Buckfield, Oxford Co., Maine, United States

Tan spherulites to 1mm lining open spaces lined with Quartz crystals to 1cm. A good locality specimen. Found chiefly in pegmatites as a late stage hydrothermal mineral, but also in metamorphic environments.

Cookeite

Formula
(Al,Li)3Al2(Si,Al)4O10(OH)8 
Crystal System
Monoclinic 
Crystal Habit
Micaceous, Pseudo Hexagonal 
Cleavage
Perfect, None, None 
Luster
Vitreous (Glassy) 
Color
white, green, brown, yellowish white, pinkish white 
Streak
white 
Class
Monoclinic - Prismatic 
Fracture
Flexible 
Hardness
2.5 

Data courtesy of Webmineral.

Collection
Phillips Collection
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