Zebra Calcite Pyramid large model in great colors from Nuevo Leon in Mexico.

Zebra Calcite Pyramid large model in great colors from Nuevo Leon in Mexico.

Zebra Calcite set of 4

Zebra Calcite set of 4 "charging & discharging plates" in great colors from Nuevo Leon in Mexico.

Zebra Calcite Pyramid in amazing colors from Nuevo Leon in Mexico.

New Calcetype in 2020! In addition to green, blue, red, rainbow, the Zebra Calcite is a natural combination of Orange Calcite with black and white striped Calcite. Very nice, for the time being only to be found as sharpened objects.
Availability: In stock
SKU
9817
Zebra Calcite Pyramid in amazing colors from Nuevo Leon in Mexico. is available to buy in increments of 1

The mineral calcite (also called calcite) consists mainly of the salt calcium carbonate (CaCO3) and is one of the most common minerals in the earth's crust. Calcium carbonate arises because soluble calcium ions come into contact with CO2 (carbon dioxide forms a carbon ion if there is a positive ion in a solution). Calcium carbonate is a sparingly soluble salt, causing the CaCO3 formed to precipitate; this is done according to the following reaction: Ca2 + (aq) + CO32- (aq) - → CaCO3 (s). Calcite has a Trigonal crystal system and belongs to the space group R-3c. A very pure form of calcite is also called double-blasting due to the double refraction of light in this mineral. It has a romboedrical structure and is sometimes found as romboedric prisms, but it is also often found in other forms, such as scalenoid, or in fiber, grain, or compact form. The crystal structure is mainly due to the temperature, degree of supersaturation in the vicinity of the crystal and the CO2 pressure. The calcite structure is the stable modification of CaCO3 at room temperature. There is another form, aragonite, which changes to calcite at 743K. In pure crystalline form, calcite is clear, colorless translucent, but due to impurities (such as copper or sodium salts) it can take on all kinds of colors, such as gray, blue, violet, green and even black. It is often also opaque white. The mineral can exhibit both phosphorescence and fluorescence. The hardness is by definition 3. Calcite is strongly birefringent. This optical property was first described by Rasmus Bartholin when the Icelandic form of the mineral, which consists of large crystal clear romboëders, became available. Christiaan Huygens gave the first explanation with his wave theory of light. Calcite is a common constituent of sedimentary rocks, of veins and in deposits in hot springs and cavities (as a dripstone). It is the mineral that forms limestone and therefore the most common mineral of biological origin. Calcite is the main constituent of limestone, chalk and marble and it is also an important constituent of marl, limestone and limestone. Calcite is responsible for the chemical weathering of coagulation and metamorphic rocks, creating sedimentary rocks. Calcite is soluble under light pressure in CO2-containing water. During the fall in the air, rainwater absorbs the gaseous carbon dioxide, making it acidic. This acid rainwater is able to dissolve lime. In underground currents, this material can transport in solution until, after contact with atmospheric pressure, CO2 escapes and the calcite precipitates. This is how stalactites and stalactites are formed in caves.

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Dimensions 60x60mm
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