40^€

Blue calcite heart

Weight 400 gr

CHARACTERISTICS
Weight	400 gr
Size	85x80x40 mm
Reference	221209441
Mineral	mineral Calcite
Category	Objects and fossils
Group	Hearts
Country	Madagascar

Contractual photos showing the object you will receive when ordering. the photos were taken in order to obtain the most faithful possible rendering of the object.
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Formula CaCO₃] CALCITE
O	Oxygen	Other no metal	47.96%
Ca	Calcium	Alkaline earth metal	40.04%
C	Carbon	Other no metal	12%
			100%
Calcite is a mineral composed of calcium carbonate. It is one of the most abundant and widespread minerals on Earth. Its formation is mainly of biochemical origin, resulting from the accumulation of shells and skeletons of marine organisms. Calcite occurs in a wide variety of crystalline forms, ranging from transparent and colorless crystals to massive and colored aggregates. Calcite has a relatively low density and a perfect cleavage in three directions, which facilitates its fragmentation into rhombohedrons. Calcite is easily recognized by its effervescence on contact with a dilute acid, releasing carbon dioxide. Calcite is often birefringent, that is to say it splits the light that passes through it, creating a double image effect. Calcite is an essential constituent of carbonate sedimentary rocks such as limestones and marls. It is involved in the formation of caves and karsts, by dissolution in acidic waters. Calcite is used in many industries: construction, agriculture, metallurgy and the manufacture of chemicals.

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Your orders are usually shipped the day of the order and at the latest after 2 working days.

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Once the package is supported by the postal service, delivery times are those announced by the Post (letter followed or Colissimo followed). Parcel shipping from France.

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