ATHENA MINERALOGY |
Mineral: | TWEDDILLITE |
---|---|
Formula: | CaSr(Mn3+,Fe3+)2Al(SiO4)(Si2O7)O(OH) |
Crystal System: | Monoclinic |
Group: | Epidote supergroup. Epidote group |
IMA Number: | 2001-014 |
References: | MM 66 (2002), 137; MR 3 (2003), 270; EJM 18 (2006), 551; L 1 (2016), 62 |
Type Locality: | Wessels mine, Kalahari Mn field, Kuruman Hill, Cape Province, South Africa |
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