mineral specimens
rare minerals
mineral dealer
systematic minerals
Black Hills minerals
fine minerals
mineral dealer
Dana minerals
IMA minerals
mineral collections
rock and minerals
gem crystal
0 item @ $0.00  

Search Mineralpedia – A Mineral Photo Database and Identification Guide

Reset
Giuseppettite

Named after Giuseppe Giuseppetti, a Professor of Mineralogy at the University of Pavia in Italy. Giuseppettite is a rare mineral that occurs only in Italy and Norway, and possibly in the United States. It can be found in veinlets in sanidine-rich volcanic ejecta. Associated minerals include K Feldspar, nephelie, hauyne, biotite and kalsilite.

Ref. Handbook of Mineralogy, Anthony et al (1995) and MSA at http://www.handbookofmineralogy.org/pdfs/giuseppettite.pdf

Gjerdingenite-Fe

This is a one locality mineral, a member of the Labuntsovite supergroup. All members of this supergroup are titanium bearing with niobium to some degree. All are cyclosilicates, reflective of their prismatic habit. This particular specimen contains a tiny less than 1mm cluster of three or four yellowish crystals.

All photos by Dakota Matrix and are Copyrighted © and may not be used without permission. Copyright © 2020 - Dakota Matrix Minerals, Inc. Privacy | Terms & Conditions | Site Map