Réf : BL11

Minéral cristallisé de Blende, calcite, pyrite et quartz du Pérou

Blende (or Sphalerite), Calcite, Quartz and Pyrite - Peru - crystal minerals 6.9 cm / 284g / BL11 - Vignette | 1001 minéraux

Blende (or Sphalerite), Calcite, Quartz and Pyrite - Peru - crystal minerals 6.9 cm / 284g / BL11

: Reduced price
182,00 €: Comparative price

182,00 €: Normal price

bCALCITE belongs to the carbonate group and contains calcium and carbon. Its chemical formula is CaC O ₃ , exactly the same as that of Aragonite or Limestone.

It is a calcium carbonate. Calcite occurs in a massive or crystallized form with a beautiful development of crystals that are found in various facies, dendritic, crested, nailhead, sandy, dog tooth...... The hardness is equal to 3/10 on the Mohs scale (10 for diamond) and the density has an average value of 2.7 (1 for water). The line on the porcelain is white.

Calcite has a vitreous luster and feels soft to the touch. It comes in several color variations: brown, red, green, blue, yellow, and colorless. Transparent specimens have a birefringence property and therefore reflect a double image.

The name comes from the Latin calx which means lime .

Blende or sphalerite belongs to the sulfide group. It contains zinc and sulfur. Its chemical formula is ZnS.
BLENDE occurs in massive form or in translucent dodecahedral crystals with a resinous appearance reminiscent of garnets. It has a yellow-brown to very dark brown color with sometimes reddish reflections.
The density of Blende is between 3.6 and 4.2 (1 for water) and its hardness between 3 and 4/10 (10 for diamond). The line on the porcelain is yellowish-brown. The name Sphalerite comes from the Greek word "sphaleros" which means deceiver.
The other name Blende given to this mineral is derived from German and means ore.

Unique piece - Contractual photos

Origin: crystal minerals from Peru

Dimensions: 6.9 x 6.5 x 4.6 cm

Weight: 284 g