Typical associated minerals include hausmannite, galaxite, braunite, pyrolusite, coronadite, hematite and magnetite.
2.
It occurs in low-grade metamorphosed sedimentary manganese ore deposits associated with hyalophane, braunite and tamaite.
3.
It occurs in association with pyrolusite, nsutite, braunite, chalcophanite, manganite and various other manganese oxides.
4.
Botnedalen is known for the occurrence of various minerals, including hausmannite, jacobsite, braunite, bustamite and rhodonite.
5.
A calcium iron bearing variant, named braunite II ( formula : Ca ( Mn 3 +, Fe 3 + ) 14 SiO 24 ), was discovered and described in 1967 from Kalahari, Cape Province, South Africa.
6.
Zoning exists within the ore body both in the vertical and horizontal sense, where horizontal zoning is fault related and shows high grade Hausmannite ore, intermediate areas show a very complex mineral assemblage ( Including Braunite and Jacobsite ), while distal areas have a lower grade ore consisting predominantly of Braunite and Kutnohorite.
7.
Zoning exists within the ore body both in the vertical and horizontal sense, where horizontal zoning is fault related and shows high grade Hausmannite ore, intermediate areas show a very complex mineral assemblage ( Including Braunite and Jacobsite ), while distal areas have a lower grade ore consisting predominantly of Braunite and Kutnohorite.
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