Sericitic alteration 
The feldspars in this alaskite from the Boulder Batholith have been largely replaced by fine-grained white mica (sericite).
UNC sample
BB-13
Rock type
Alaskite
Locality
Montana
Sericitic alteration The feldspars in this alaskite from the Boulder Batholith have been largely replaced by fine-grained white mica (sericite). |
UNC sample BB-13 | |
Rock type Alaskite | ||
Locality Montana | ||
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