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Sphalerite (Spinel Law-twinned) over Quartz from Smallcleugh Mine, Nenthead, Alston Moor, Cumbria, England

 
Sphalerite (Spinel Law-twinned) over Quartz from Smallcleugh Mine, Nenthead, Alston Moor, Cumbria, England

Sphalerite (Spinel Law-twinned) over Quartz from Smallcleugh Mine, Nenthead, Alston Moor, Cumbria, England

Sphalerite (Spinel Law-twinned) over Quartz from Smallcleugh Mine, Nenthead, Alston Moor, Cumbria, England

Sphalerite (Spinel Law-twinned) over Quartz from Smallcleugh Mine, Nenthead, Alston Moor, Cumbria, England

Sphalerite (Spinel Law-twinned) over Quartz from Smallcleugh Mine, Nenthead, Alston Moor, Cumbria, England

Sphalerite (Spinel Law-twinned) over Quartz from Smallcleugh Mine, Nenthead, Alston Moor, Cumbria, England

DESCRIPTION:No. 69808
Mineral:Sphalerite (Spinel Law-twinned) over Quartz
Locality:Smallcleugh Mine, Nenthead, Alston Moor, Cumbria, England
Description:Large cluster with many lustrous black sphalerite crystals to 12 mm over sparkling transparent colorless quartz microcrystals over gray matrix. The sphalerite crystals are repeatedly twinned following the Spinel Law of twinning on the {111} plane. Ex. Phillip Greybill (b. 1935- ) collection
Overall Size:15x7x5.5 cm
Crystals:micro to 12 mm
Status: Sold - Posted here for reference only
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