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Eucryptite & Albite ps after Spodumene

#DL63816
SOLD
Eucryptite from Branchville quarry, Branchville, Fairfield Co., Connecticut, United States - DL63816
Eucryptite from Branchville quarry, Branchville, Fairfield Co., Connecticut, United States - DL63816

Eucryptite & Albite ps after Spodumene

#DL63816
Availability
Sold
Size
8 x 6.5 x 6.5 cm - Sm Cabinet 
Formula
LiAlSiO4 (RRUFF)
Locality
Branchville quarry, Branchville, Fairfield Co., Connecticut, United States
Tagged
pegmatite mineral , lithium

Great specimen with a few Spodumene crystals one of which was replaced by Eucryptite and is intense red as seen in the fluorescent photos. Illustrated on page 56, Fig. 4-9f. Another pink Spodumene crystal is partially replaced. as seen in the other FL photos.

Illustrated in London's book "Pegmatites"

Eucryptite

Formula
LiAlSiO4 
Crystal System
Trigonal 
Cleavage
Indistinct, None, None 
Luster
Vitreous (Glassy) 
Color
brown, colorless, white 
Streak
white 
Class
Trigonal - Rhombohedral 
Fracture
Brittle - Conchoidal 
Hardness
6.5 

Data courtesy of Webmineral.

Collection
Dr. David London Collection
Special Info
Illustrated in London's book "Pegmatites"
Mineralpedia
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On Dakota Matrix
Previously Sold Eucryptite
On Dakota Matrix
Other Available Eucryptite
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Mindat
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