Catapleiite Value, Price, and Jewelry Information


Catapleiite
Rob Lavinsky, iRocks.com – CC-BY-SA-3.0 [CC-BY-SA-3.0], via Wikimedia Commons

The only reported cut catapleiite is from Mte. Ste. Hilaire, Quebec, Canada, in the form of tiny colorless gems.

Catapleiite Value

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Catapleiite Information

DataValue
NameCatapleiite
Crystallography Hexagonal; crystals thin hexagonal plates. Also lamellar masses; twinned. Gaidonnayite is orthorhombic.
Colors Light yellow, yellowish brown, brown, salmon-pink, yellowish red. Rarely pale blue or colorless.
Luster Vitreous, greasy, or dull.
Fracture Parting.
Hardness 5-6
Specific Gravity 2.65 – 2.8
Birefringence 0.280
Cleavage Perfect 1 direction, imperfect 2 directions.
Stone SizesGems under 1 carat have been cut from Canadian material.
Luminescence None reported
Spectral Not diagnostic
FormulaNa2ZrSi3O9· 2H2O; Dimorphous with Gaidonnayite
Pleochroism None in colorless gems.

OPTICS: o= 1.596; e = 1.624

Uniaxial (+)

OCCURRENCE: Alkalic rocks and pegmatites.

Langesundfford District, Norway; Magnet Cove, Arkansas.

Greenland; USSR; Madagascar.

Mt. Ste. Hilaire, Quebec, Canada: cuttable crystals. 

COMMENTS: The only reported cut catapleiite is from Mte. Ste. Hilaire, Quebec, Canada, in the form of tiny colorless gems.

NAME: From Greek words meaning rare minerals because catapleiite is usually associated with other rare minerals.