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 Mangangordonite

Reset

Mangangordonite

Mangangordonite

Named as being the manganese analogue of gordonite. Mangangordonite is a rare mineral that occurs as a secondary mineral in granite pegmatites. It can be found in localities only in the United States, Russia, and Germany. Associated minerals include Jahnsite, beraunite, strunzite, strengite, spodumene, quartz, muscovite, fluorapatite, tourmaline, and siderite.

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

Formula
Mn2+Al2(PO4)2(OH)2ยท8H2
Crystal System
Triclinic 
Crystal Habit
Tabular 
Cleavage
Perfect, None, None 
Luster
Vitreous (Glassy) 
Color
colorless, white, light yellow 
Streak
white 
Class
Triclinic - Pinacoidal 
Hardness
WebMineral
View Mangangordonite 
Mindat
View Mangangordonite 

Mangangordonite from Foote mine, Cleveland Co., North Carolina, United States

Mangangordonite
            from Foote mine, Cleveland Co., North Carolina, United States

Light pink micro crystals in a small 1mm cluster in vug.

Pearly light pink Mangangordonite crystals to perhaps 0.3mm occuring as singles and groups in 1cm vug of corroded Spodumene/Quartz matrix. The Quartz matrix is odd in the way that it is granulated. This fact provides a clue to the deposition of this pegmatite according to some of the authors who studied this deposit such as J. White. White indicated that this texture, along with other evidence, shows that the Foote pegmatite may have been deposited in a crystallized state. In other words it was squeezed into the country rock after or close to solidification.

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