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Manganese specimens

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Manganese Biominerals (Todorokite, Romanechite, Birnessite)
Chesapeake Bay, Calvert County, Maryland, USA
$1250
110mm x 30mm x 30mm
Manganese Biominerals (Todorokite, Romanechite, Birnessite)
Chesapeake Bay, Calvert County, Maryland, USA
$950
80mm x 80mm x 60mm
Manganese Biominerals (Todorokite, Romanechite, Birnessite)
Chesapeake Bay, Calvert County, Maryland, USA
$900
50mm x 40mm x 40mm
Manganese Biominerals (Todorokite, Romanechite, Birnessite)
Chesapeake Bay, Calvert County, Maryland, USA
$50
30mm x 10mm x 10mm
Manganese Biominerals (Todorokite, Romanechite, Birnessite)
Chesapeake Bay, Calvert County, Maryland, USA
$350
60mm x 40mm x 20mm
Calcite with Manganese Dendrite Inclusions
Jinhua, Zhejiang, China
$3250
60mm x 20mm x 20mm
Manganese Biominerals (Todorokite, Romanechite, Birnessite)
Chesapeake Bay, Calvert County, Maryland, USA
$400
70mm x 10mm x 10mm
Manganese Biominerals (Todorokite, Romanechite, Birnessite) Ps. After Arthropod Burrows
Chesapeake Bay, Calvert County, Maryland, USA
$750
60mm x 60mm x 30mm
Manganese Biominerals (Todorokite, Romanechite, Birnessite)
Chesapeake Bay, Calvert County, Maryland, USA
$750
60mm x 50mm x 20mm
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* price is an approximate conversion and may not be accurate.

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