Manganese-bearing Calcite specimens
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Manganoan Calcite
Huanggang Mine, Keshiketeng Co., Chifeng Prefecture, Inner Mongolia A.R., China
$280
28mm x 21mm x 16mm
From: Bob Griffis Minerals
Manganoan Calcite
2nd Sovetskii Mine, Dalnegorsk, Primorsky Krai, Russia
$1800
80mm x 80mm x 50mm
From: The Arkenstone
Manganoan Calcite
Piz Beverin, Mathon, Schams, Hinterrhein Valley, Graubunden, Switzerland
$2450
90mm x 60mm x 50mm
From: The Arkenstone
Manganoan Calcite - twinned (fluorescent)
Huanggang Fe-Sn deposit, Hexigten Banner, Chifeng City, Inner Mongolia, China
$2750
120mm x 80mm x 40mm
From: The Arkenstone
Manganoan calcite
2nd Sovetskii mine, Dalnegorsk, Primorskiy Kray, Russia
$60
39mm x 35mm x 35mm
From: Spirifer Minerals