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Porphyry Feldspar

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PDM920398

Porphyry Feldspar

Description Tabs

Description
Locality: 
Bannockburn, Timiskaming District, Ontario, Canada
Class: 
Crystals on Matrix
Size Range: 
Cabinet (10-18 cm)
Size: 
15.8 × 11.1 × 6 cm
Weight: 
640.00gr
Description

Very rare in collections is this old piece from Canada. It features well-formed isolated phenocrystals of feldspar set in a fine-grained mafic matrix. This is a nice representative piece of the Bannockburn porphyry rock (Matachewan porphyry) rock, that was formed during early Proterozoic volcanism (2.45 - 2.47 Ga).

Cut and polished by Dr Gerard Vogel in 1977.

Combine specimens to reduce shipping costs!.

Mineral Data
What's on the rock

Feldspar

Group Parent: 
Feldspar Group

Seller Information

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