Blue calcite mineral egg
Weight 1.45 kg
| CHARACTERISTICS | |
| Weight | 1450 gr. 1.45 kg |
| Size | max 13 cm 85x85x130 mm |
| Reference | 221209344 |
| Mineral | mineral Calcite |
| Category | Objects and fossils |
| Group | Eggs |
| Country |
 Madagascar
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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% | |||
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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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Shipping time
Your orders are usually shipped the day of the order and at the latest after 2 working days.
Delivery delay
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.
Returns and Refund
Our refund and return policy lasts 14 days. You can read the details on the "return and delivery" page.
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