Calcite (honey/yellow scalenohedral calcite) — mineral Identification & Properties | Geo-Gem
Calcite (honey/yellow scalenohedral calcite) is a mineral. 1) Acid test: Place a drop of cold, dilute HCl (10%) or white vinegar—calcite will effervesce vigorously; barite, fluorite, and gypsum will not. 2) Hardness: Try to scratch with a copper coin—calcite will scratch easily; it should not be s…