Margarite (uncommon mica) Urish Coll.

Wright Mine, Chester Emery Mines, Chester, Hampden Co., Massachusetts
Miniature, 4.5 x 3.3 x 2.7 cm
Start Time: 07/19/2012 6:30:00 pm (CDT)
End Time: 07/26/2012 6:30:29 pm (CDT)
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Item Description

Margarite is an uncommon Mica Group species. Foliated clusters of pearlescent pink margarite blades are showingly emplaced in a vug in biotite-chlorite schist. The Wright Mine is the oldest of the famous Chester emery mines. Ex Harold Urish Collection.

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