MEGASCOPIC IDENTIFICATION OF COMMON ROCK-FORMING MINERALS.
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107 total views COMPOSITION CaCO3 CRYSTAL SYSTEM HEXAGONAL CRYSTAL FORM/HABIT RHOMBOHEDRAL CRYSTALS COLOUR WHITE LUSTRE VITREOUS TRANSPARENCY TRANSLUCENT STREAK WHITE CLEAVAGE PERFECT FRACTURE CONCHOIDAL HARDNESS 3 SPECIFIC GRAVITY 2.5-2.8 DIAGNOSTIC PROPERTIES RHOMBOHEDRAL CRYSTALS, WHITE IN COLOUR, HARDNESS 3 WITH VITREOUS LUSTRE AND CONCHOIDAL FRACTURE. OCCURRENCE AND ASSOCIATION OCCURS AS COMMON MINERAL, IN SEDIMENTS, ALTERED BASIC IGNEOUS …
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