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Cedar workshop · Hand-planed edits · Shop the bench
Free shipping over $85 · Washi-banded parcels
Ribbon-taped crates · Studio-milled finishes · New arrivals weekly
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4.3

07809 - Top Beautiful 4.83 Inch Calcite Crystals from South Morocco Minerals in Egypt and Niger

SKU 99121251527
USD130.50 USD163.50

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Ships within 48 hours · Estimated delivery Sep 10 - Sep 15

Workshop ledger

Cedar notes
Description

in Egypt and Niger

Charroud and Fedan 1992

basinal (siliceous)

The vertebrae are still preserved in a state of anatomical semi-articulation (21 vertebrae bones)

Unbroken specimen

07809 - Top Beautiful 4.83 Inch Calcite Crystals from South Morocco Minerals in Egypt and NigerCalcite is a carbonate mineral and the most stable polymorph of calcium carbonate (CaCO3). The Mohs scale of mineral hardness, based on scratch hardness comparison, defines value 3 as "calcite". Other polymorphs of calcium carbonate are the minerals aragonite and vaterite. Aragonite will change to calcite over timescales of days or less at temperatures exceeding 300 C and vaterite is even less stable.

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