Ferro-hornblende : ◻Ca2(Fe2+4Al)(Si7Al)O22(OH)2
Magnetite : Fe2+Fe3+2O4
Collected by:
Photo added to mindat.org
“Ferro-hornblende crystal on magnetite (martite). FOV is 10mm across.
Rick Dalrymple Specimen & Photo. Self Collected. ”
Rick Dalrymple - 20th July 2013
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