Images
Formula: Pb2Mn2+(AsO3)2.2H2O
Arsenite
Crystal System: Triclinic
Specific gravity: 5.73 calculated
Hardness: 3
Streak: Light yellow
Colour: Yellow orange
Environments
Rouseite is an extremely rare mineral, approved in 1984 but to date (June 2023) has been reported only from the
type locality.
Localities
The type locality is Långban, Filipstad, Värmland County, Sweden. Rouseite has been found on a single museum
specimen from this locality,
which was collected many years ago. The matrix is a banded calcite -
hausmannite ore, and
secondary minerals
are deposited on a fracture surface that cuts across the ore banding. The assemblage is an intimate mixture of
calcite, trigonite and
rouseite. Two generations
of finnemanite are present. Some
trigonite appears to
have been replaced by rouseite
(AM 71.1034-1036).
Back to Minerals