Volcanic Sample: Trachyte Porphyry
Sample BUPI48 from Cripple Creek, Colorado
Below an much older trachyte porphyry from Bannockburn, Ontario [Sample M-18-7-17]
Static images (click to full size image):
BUPI 48
M-18-7-17 view a
M-18-7-17 view b
M-18-7-17 view c
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