Black, banded cumulate
CHROMITE
crystals in dunite
Twin Sisters Mountian
, Whatcom County, Washington, USA
Specimen is 7.6 x 4.7 x 2.4 cm (3 x 1-7/8 x 15/16 in)
Self-collected on September 21, 2014
Photo Copyright © 2014 Jeffrey M. Schwartz
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