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  

Mineralpedia Details for Gordonite

Reset

Gordonite

Gordonite

Named for Samuel George Gordon, an American mineralogist at the Academy of Natural Sciences in Pennsylvania, USA. Godonite can be found in variscite-rich phosphate nodules in limestone and as a hydrothermal mineral in granite pegmatites. Localities for Gordonite include in the United States including here in the Black Hills of South Dakota at the Tip Top mine, Canada, Brazil, Australia, and Russia, among just a couple others.

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

Formula
MgAl2(PO4)2(OH)2ยท8H2
Crystal System
Triclinic 
Crystal Habit
Encrustations 
Cleavage
Perfect, None, None 
Luster
Vitreous - Pearly 
Color
colorless, gray white, white, light green, light pink 
Streak
white 
Class
Triclinic - Pinacoidal 
Fracture
Brittle - Conchoidal 
Hardness
3.5 
WebMineral
View Gordonite 
Mindat
View Gordonite 

Gordonite from Tip Top mine, Custer Co., South Dakota, United States

Gordonite
            from Tip Top mine, Custer Co., South Dakota, United States

Colorless prismatic crystals of Gordonite, less than 1mm.

Clusters of Gordonite, less than 1mm.

Click thumbnail images for larger view.

All photos by Dakota Matrix and are Copyrighted © and may not be used without permission. Copyright © 2019 - Dakota Matrix Minerals, Inc. Privacy | Terms & Conditions | Site Map