Wiklundite
Arsenite-silicate mineral From Wikipedia, the free encyclopedia
Wiklundite is a rare[3] and complex arsenate arsenite-silicate mineral with the chemical formula Pb2(Mn2+,Zn)3(Fe3+,Mn2+)2(Mn2+,Mg)19(As3+O3)2(Si,As5+O4)6(OH)18Cl6. The mineral characterizes in a large c unit cell parameter.[2] It was found in Långban, Sweden - a home for many rare and exotic minerals.[4]
| Wiklundite | |
|---|---|
| General | |
| Category | Silicate |
| Formula | Pb2(Mn2+,Zn)3(Fe3+,Mn2+)2(Mn2+,Mg)19(As3+O3)2(Si,As5+O4)6(OH)18Cl6 |
| IMA symbol | Wik[1] |
| Crystal system | Trigonal |
| Crystal class | Hexagonal scalenohedral (3m) H-M symbol: (3 2/m) |
| Space group | R3c |
| Unit cell | a = 8.26, c = 126.59 [Å] (approximated) |
| Identification | |
| References | [2] |
Relation to other minerals
Structure of wiklundite is unique.[2] A slightly chemically similar mineral, although lacking manganese and iron, is hereroite.[5]
References
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