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 Strunzite

Reset

Strunzite

Strunzite

Hugo Strunz is honored as the namesake of Strunzite. He was a Professor of Mineralogy at the Technical University in Berlin, Germany and is noted for his work on pegmatite phosphates in particular in the area of Hagendorf, Germany. This secondary mineral is usually altered from triphylite in pegmatites and can be found in several localities including several mines here in the Black Hills, South Dakota.

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

Formula
Mn2+Fe3+2(PO4)2(OH)2ยท6H2
Crystal System
Triclinic 
Crystal Habit
Acicular, Lath 
Cleavage
Good, None, None 
Luster
Vitreous (Glassy) 
Color
brownish yellow, golden yellow, straw yellow 
Streak
light yellow 
Class
Triclinic - Pinacoidal 
Hardness
WebMineral
View Strunzite 
Mindat
View Strunzite 

Strunzite from Palermo mine, Groton, Grafton Co., New Hampshire, United States

Strunzite
            from Palermo mine, Groton, Grafton Co., New Hampshire, United States

Fibrous light tan crystals to 1mm.

Click thumbnail images for larger view.

Strunzite from Gravel Hill mine, Perranzabuloe, Cornwall, England

Strunzite
            from Gravel Hill mine, Perranzabuloe, Cornwall, England Straw yellow fibrous crystals to about 0.75mm.
Click thumbnail images for larger view.

Strunzite from Hagendorf-Süd, Oberpfälzer Wald, Bavaria, Germany

Strunzite
            from Hagendorf-Süd, Oberpfälzer Wald, Bavaria, Germany

Golden or straw colored sprays of Strunzite to 3mm associated with yellow Laueite. Excellent specimen. Strunzite has been referred to as "Frondel's whiskers" after Clifford Frondell, who described the mineral in 1958. Although, Frondell named the mineral after Hugo Strunz.

Click thumbnail images for larger view.

Strunzite from Roosevelt mine, Custer Co., South Dakota, United States

Strunzite
            from Roosevelt mine, Custer Co., South Dakota, United States

Golden sprays of Strunzite, 1-2mm.

Click thumbnail images for larger view.

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

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

A real nice silky, silvery blonde grouping of fibrous Strunzite crystals greater than 1cm across. Outward from the Strunzite are fibrous light to dark green Rockbridgeite. Mitridatite is also present and is probably most of the dull green.

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