Catapleiite Value, Price, and Jewelry Information

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

Catapleiite

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

Catapleiite Information

Data Value
Name Catapleiite
Colors Light yellow, yellowish brown, brown, salmon-pink, yellowish red. Rarely pale blue or colorless.
Hardness 5 - 6
Fracture Irregular to uneven, also parting
Cleavage Perfect 1 direction, imperfect 2 directions
Stone Sizes Gems under 1 carat have been cut from Canadian material.
Formula Na2ZrSi3O9· 2H2O; Dimorphous with Gaidonnayite
Crystallography Hexagonal; crystals thin hexagonal plates. Also lamellar masses; twinned. Gaidonnayite is orthorhombic.
Refractive Index 1.596-1.624
Birefringence 0.280
Luminescence None reported
Luminescence Present No
Absorption Spectrum Not diagnostic.
Pleochroism None in colorless gems.
Optics = 1.596; e = 1.624. Uniaxial or biaxial (+).
Optic Sign Uniaxial +, Biaxial +
Luster Vitreous, greasy, or dull.
Specific Gravity 2.65–2.8
Transparency Transparent.

OPTICS: = 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.

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