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Albite with Muscovite contact with border zone

#DL63815
SOLD
Albite from Harding mine, Taos Co., New Mexico, United States - DL63815
Albite from Harding mine, Taos Co., New Mexico, United States - DL63815

Albite with Muscovite contact with border zone

#DL63815
Availability
Sold
Size
18 x 10 x 8 cm - Cabinet 
Formula
NaAlSi3O8 (RRUFF)
Locality
Harding mine, Taos Co., New Mexico, United States
Tagged
pegmatite mineral

This specimen from the border zone represents an example of wall-rock interaction with the pegmatite solution as it was injected into the country rock. The white portion is the pegmatite and is composed of Albite, Muscovite, Beryl. The black portion is the wall rock, which through metasomatism, was altered to Schorl tourmaline.

The specimen is illustrated in "Pegmatites" on page 123 Fig. 7-12d.

Illustrated in London's book "Pegmatites"

Albite

Formula
NaAlSi3O8 
Crystal System
Triclinic 
Crystal Habit
Blocky, Striated, Granular 
Cleavage
Perfect, Good, None 
Luster
Vitreous (Glassy) 
Color
white, gray, greenish gray, bluish green, gray 
Streak
white 
Class
Triclinic - Pinacoidal 
Fracture
Uneven 
Hardness
7 

Data courtesy of Webmineral.

Collection
Dr. David London Collection
Special Info
Illustrated in London's book "Pegmatites"
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