Schorl : Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH)
As recorded:
Crabtree Mine, Spruce Pine, Mitchell Co., North Carolina, USA
Photo added to mindat.org
“Multiple schorl crystals in biotite. Field of view is 2.3 cm x 1.3 cm. Field collected in 2006. S. Bonney specimen and photo.”
Steve Bonney - 24th July 2006
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