Formula: SrAl2(CO3)2(OH)4.H2O
Hydrated carbonate containing hydroxyl, dresserite group
Crystal System: Orthorhombic
Specific gravity: 2.71 measured, 2.73 calculated
Hardness: 2 to 3
Streak: White
Colour: White
Environments
Igneous environments
Carbonatites
Sedimentary environments
Metamorphic environments
Localities
At the type locality, the Francon quarry, Montréal, Quebec, Canada, strontiodresserite occurs in vugs in a
silicocarbonatite sill as spherical aggregates to 1 mm in diameter of white fibres. Associated minerals include
quartz, weloganite,
dawsonite, montroyalite and
albite
(Minrec 37.1.46, Webmin, HOM).
At Condorcet, Nyons, Drôme, Auvergne-Rhône-Alpes, France, strontiodresserite has been found in fissures in
marl as compact spherical aggregates, less than 2 mm in diameter, of white
fibrous crystals
(Minrec 37.1.46).
At the Norcem Quarry, Kjøpsvik, Narvik, Nordland, Norway, strontiodresserite has been found in the
marble quarry as white, fibrous masses of capillary crystals up to
2 cm long
(Minrec 37.1.46).
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