Velvet bags with Pyrite from Peru (BEST SELLER)

Velvet bags with Pyrite from Peru (BEST SELLER)

Morelialite from Morelia Mexico.

Morelialite from Morelia Mexico.

Prehnite with tourmaline (approx. 400 grams) from Mali

Lovely little tumbled Prehnite with beautiful Tourmaline.
Availability: In stock
SKU
6489
Prehnite with tourmaline (approx. 400 grams) from Mali is available to buy in increments of 1

The mineral Prehnite is a calcium-aluminum-silicate with the chemical formula Ca2Al2Si3O10 (OH). The mineral belongs to the fylosilicaten. The transparent to translucent, colorless, white, gray or yellow to yellow-green prehnite has a glass to pearl luster, a white stripe color and cleavage is clear according to the crystal surface [001]. Prehnite has an average density of 2.87, and the hardness is 6 to 6.5. The crystal system is orthorhombic and the mineral is not radioactive. The mineral prehnite is named after the Dutch colonel Hendrik von Prehn (1733 - 1785), who discovered the mineral in South Africa. Prehnite was the first mineral, which was named after a person. Prehnite is a mineral that occurs fairly common in hydrothermal weathered rocks. Although it is not a zeolite, it is often found in the vicinity of zeolites. It is among others found in granites, gneisses and syenieten. It is also indicative mineral for the low-grade metamorphic facies prehnite-pumpellyiet. The type of location is Haslach, Harzburg Oberstein, Germany.

 
Prehnite

  • Largest gemstone wholesaler in Europe
  • More than 165,000 various articles in stock
  • Fast delivery
  • Guaranteed competitive prices

Do you have a question? Please do not hesitate to contact us: