Images
Formula: CaCu(SiO4).H2O
Unclassified silicate
Crystal System: Monoclinic
Specific gravity: 3.16 to 3.18 measured, 3.67 calculated
Hardness: not determined
Streak: Light blue
Colour: Deep azure blue
Common impurities: Al,Fe,Mg
Environments:
Localities
At the type locality, Bawana Mine, Beaver county, Utah, USA, stringhamite occurs in fractures in
diopside-magnetite
skarn near a contact
between quartz monzonite and
limestone,
(Mindat, Dana) together with secondary and
primary
copper minerals (Webmin), associated with
thaumasite, tenorite,
kinoite and calcite
(AM61.189, HOM).
Stringhamite from the Bawana Mine - Image
At Christmas, Arizona, USA, stringhamite is associated with kinoite and
apophyllite
(HOM).
Stringhamite from the Christmas Mine -
Image
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