Italiano  English  

Spedizione Gratis in Italia per ordini oltre 69 Euro

Dumortierite 1 Piece Raw Minerals Stones Rocks Collecting (2)

PRICE :
3,70
  • Product Code: M21212
  • Product Available
Quantity :  

Description

Origin : Brazil


Dumortierite 1 Piece 20-30 gr - cm 2,5-4,5 Raw Minerals Stones Rocks for Collection.
Boron and Aluminum Silicate.


Dumortierite is a variously colored fibrous aluminum borosilicate. It was named in honor of the French paleontologist Eugène Dumortier.
Dumortierite forms typical compact fibrous aggregates composed of thin prismatic crystals. The crystals are glassy with variable colors: blue, red, brown, green. More rarely violet or pink. The coloring depends on the substitution of the aluminum atoms with iron atoms or other trivalent metals.
It forms in aluminum-rich metamorphic rocks at high temperatures after slow cooling. It is found in masses of mining interest in Nevada, California and Arizona. In Europe it is present in France. It is also found in Madagascar and Brazil. In Italy it has been reported in the pegmatites of Sondalo in Lombardy.
Dumortierite is hard, heavy, well flaky. It is used in the manufacture of quality porcelain and for the preparation of aluminous refractories.
Dumortierite is often confused with azure quartz or blue quartz. It actually has nothing to do with quartz. The error derives only from the fact that sometimes the blue color of some massive quartz is due precisely to inclusions of dumortierite. However, quartz can take on the same color even for inclusions of different materials. Furthermore, dumortierite may appear unassociated with quartz.
Submicroscopic inclusions of dumortierite provide the typical rose quartz coloration.



For information or assistance please send a mail (see Contact Us): we'll contact you as soon as possible.

Remember that mails sent without object or with only a writing such as "info" will be deleted as precaution against  virus and spam.

Do not forget to read the terms of sale in the footer below, BEFORE you make a purchase!

Insert you e-mail address in order to be updates on our products and promo

Back to Top