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Todorokite With Manganite

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LGM521381

Todorokite With Manganite

Ex Dr. W. Schwartz, Bonn, Germany

Description Tabs

Description
Locality: 
Kuruman, Kalahari, Northern Cape Province, South Africa
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
3.5 × 5 × 1.5 cm
Weight: 
40.00gr
Description

Todorokite is an uncommon and complex Mn oxide species. The specimen hosts fibrous, dark greenish-gray aggregates of todorokite on manganite matrix, some manganite crystals are present.

Old material from Dr. Schwartz collection, dated to the 60's or 70's, Kuruman, Kalahari manganese field was formerly part of Rhodesia and now situated in South Africa.

Mineral Data
What's on the rock

Todorokite

Formula: 
(Ca,K,Na,Mg,Ba,Mn)(Mn,Mg,Al)6O12·3H2O
Strunz: 
4.DK.10
Hardness: 
1.5
Type Locality: 
Todoroki mine, Yoichi, Shiribeshi Province, Hokkaido, Japan

Manganite

Formula: 
Mn3+O(OH)
Strunz: 
4.FD.15
Hardness: 
4.0
Type Locality: 
Manganese deposit, Ilfeld, Nordhausen, Harz, Thuringia, Germany

Seller Information

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