Gaudefroyite : Ca4Mn3+2-3(BO3)3(CO3)(O,OH)3
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“Field of view 6 mm. Collection M. Kampf No 90-066.”
Manfred Kampf - 2nd May 2005
Photo added to mindat.org
“Field of view 11 mm. Collection M. Kampf No 90-066.”
Manfred Kampf - 4th June 2006
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