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 Meurigite-Na

Reset

Meurigite-Na

Meurigite-Na

Named for Professor John Meurig Thomas, who was a crystal chemist at the University of Cambridge in England. The name Meurigite originally referred to just the potassium-dominant species, however, later meurigites were discovered to be sodium-dominant. The type locality of the minerals is at the Silver Coin mine in Nevada, USA. It occurs there as cream colored radial sprays of flattened fibers or laths. It forms late in a paragenetic sequence that includes quartz, barite, apatite-CaF, goethite, rockbridgeite, cacoxenite, alunite, wardite, turquoise, chalcosiderite, leucophosphite, lipscombite, zinclipscombite, kidwellite, strengite, variscite, crandallite, perhamite, and jarosite. Additional localities include in Australia, Brazil, and the Czech Republic.

Ref. Kampf, R. et al. and American Mineralogist May-June v. 94 no. 5-6 p. 720-727

Formula
[Na(H2O)2.5][Fe3+8(PO4)6(OH)7]·4H2
Crystal System
Monoclinic 
Crystal Habit
Radial, Acicular 
Cleavage
Distinct, None, None 
Luster
Silky 
Color
cream, pale yellow 
Streak
white 
Class
Monoclinic - Prismatic 
Fracture
Splintery 
Hardness
WebMineral
View Meurigite-Na 
Mindat
View Meurigite-Na 

Meurigite-Na from Tom's Phosphate quarry, Kapunda, South Australia, Australia

Meurigite-Na
            from Tom's Phosphate quarry, Kapunda, South Australia, Australia

Yellowish green spherules composed of compact fibrius micro crystals to about 0.3mm as singles and bunches.

Click thumbnail images for larger view.

Meurigite-Na from Silver Coin mine, Humboldt Co., Nevada, United States

Meurigite-Na
            from Silver Coin mine, Humboldt Co., Nevada, United States

Light yellow fibrous hemispheres to 0.8mm.

Click thumbnail images for larger view.

Meurigite-Na from Těškov quarry, SE of Prague, Bohemia, Czech Republic

Meurigite-Na
            from Těškov quarry, SE of Prague, Bohemia, Czech Republic

The mineral was discovered at the Silver Coin mine, but this locality is the best. On this specimen are scattered fuzzy balls to 0.75mm. The balls are composed of fibrous crystals which can be seen on some cross-sections. Excellent rich specimen. And no these aren't tiny peaches.

Click thumbnail images for larger view.

All photos by Dakota Matrix and are Copyrighted © and may not be used without permission. Copyright © 2022 - Dakota Matrix Minerals, Inc. Privacy | Terms & Conditions | Site Map