You are watching: What mineral fizzes when in contact with hydrochloric acid
The mineral is placed in acid. Calcite bubbles easily in cold acid. This is not calcite.
The most usual white mineral in the calcite group react in different ways to cold and hot acid, as follows:
Calcite (CaCO3): balloon strongly in cold acidMagnesite (MgCO3): bubbles just in hot acidSiderite (FeCO3): bubbles only in warm acidSmithsonite (ZnCO3): bubbles only in warm acid
Calcite is by much the most typical in the calcite group, and is the only one that generally looks prefer our specimen. However, we know it isn't calcite. Periodically magnesite wake up in white granular masses choose our specimen, however the main suspect is dolomite (CaMg(CO3)2), i m sorry is not in the calcite family. It balloon weakly in cold acid, strongly in hot acid. Since we're utilizing weak vinegar, we will certainly pulverize the specimen to do the reaction faster.
Crushed carbonate Mineral
The an enig mineral is ground in a hand mortar. The well-formed rhombs room a sure sign of a carbonate mineral.
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Dolomite in Acetic acid
Powdered dolomite bubbles tenderness in cold hydrochloric acid and in hot vinegar. Hydrochloric mountain is lot preferred due to the fact that the reaction v dolomite is otherwise really slow.