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Formula: Ca2B14O20(OH)6.5H2O
Hydrated hexaborate
Crystal System: Monoclinic
Specific gravity: 2.07 to 2.14 measured, 2.09 calculated
Hardness: 3½
Streak: White
Colour: White
Solubility: Insoluble in water
Environments
Sedimentary environments
Evaporite Deposits
Hydrothermal environments
Localities
At the Clifton Quarry, Windsor, Hants County, Nova Scotia, Canada, ginorite occurs with
mirabilite, gypsum and
anhydrite
(HOM).
At the type locality, Sasso Pisano, Castelnuovo di Val di Cecina, Pisa Province, Tuscany, Italy, ginorite
occurs as veins in sandstone associated with some
calcite, either in elongated prismatic laths or minutely granular
lozenge-shaped grains
(AM 20.403-404).
At the Chelkar salt dome, Aksai Valley, Shalkar District, Aktobe Region, Kazakhstan, ginorite is associated
with kieserite, anhydrite,
preobrazhenskite,
boracite, aksaite,
halurgite, strontioborite
and metaborite
(HOM).
Ginorite from the Chelkar Salt Dome -
Image
At the Hard Scramble claim, Ryan, Furnace Creek Mining District, Inyo County, California, USA, ginorite and
sassolite are closely associated, both minerals occurring in soft, white
to pale yellowish brown efflorescent masses in weathered basalt within
50 cm of the surface. The underlying altered basalt contains veins of
colemanite and is associated with
colemanite-bearing
limestone.
The ginorite occurs in white pellets which average about 1 to 2 mm across and are embedded in a pale
yellowish brown matrix of sassolite and
clay. In this matrix pearly
sassolite plates as much as 1 mm across are present
(AM 42.56-61).
Minerals associated with ginorite include sassolite,
colemanite and
mcallisterite
(HOM).
Ginorite from the Hard Scramble Claim -
Image
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