Vote for your favorite mineral in #MinCup26! - Sphalerite vs. Anorthite
Both zinc ore Sphalerite and calcium plagioclase feldspar Anorthite have perfect cleavage that will split cleanly if you hit them with a hammer, but only one can claim a larger split of your votes!
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Magnesio-fluoro-arfvedsonite from
Hohenberg quarries, Berkum, Wachtberg, Rhein-Sieg-Kreis, Cologne, North Rhine-Westphalia, Germany


05420240017272252518688.jpg
Magnesio-fluoro-arfvedsonite

Hohenberg quarries, Berkum, Wachtberg, Rhein-Sieg-Kreis, Cologne, North Rhine-Westphalia, Germany
08158330017271987123064.jpg
Magnesio-fluoro-arfvedsonite

Hohenberg quarries, Berkum, Wachtberg, Rhein-Sieg-Kreis, Cologne, North Rhine-Westphalia, Germany
01247080017371352905008.jpg
Magnesio-fluoro-arfvedsonite

Hohenberg quarries, Berkum, Wachtberg, Rhein-Sieg-Kreis, Cologne, North Rhine-Westphalia, Germany
08735580017371352901848.jpg
Magnesio-fluoro-arfvedsonite

Hohenberg quarries, Berkum, Wachtberg, Rhein-Sieg-Kreis, Cologne, North Rhine-Westphalia, Germany
01793050017371352918137.jpg
Magnesio-fluoro-arfvedsonite

Hohenberg quarries, Berkum, Wachtberg, Rhein-Sieg-Kreis, Cologne, North Rhine-Westphalia, Germany
01247080017371352905008.jpg
Magnesio-fluoro-arfvedsonite

Hohenberg quarries, Berkum, Wachtberg, Rhein-Sieg-Kreis, Cologne, North Rhine-Westphalia, Germany
00702800017272252529834.jpg
Magnesio-fluoro-arfvedsonite

Hohenberg quarries, Berkum, Wachtberg, Rhein-Sieg-Kreis, Cologne, North Rhine-Westphalia, Germany
08158330017271987123064.jpg
Magnesio-fluoro-arfvedsonite

Hohenberg quarries, Berkum, Wachtberg, Rhein-Sieg-Kreis, Cologne, North Rhine-Westphalia, Germany
01247080017371352905008.jpg
Magnesio-fluoro-arfvedsonite

Hohenberg quarries, Berkum, Wachtberg, Rhein-Sieg-Kreis, Cologne, North Rhine-Westphalia, Germany
Locality type:Quarry
Classification
Species:Magnesio-fluoro-arfvedsonite
Formula:NaNa2(Mg4Fe3+)[Si8O22]F2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Magnesio-fluoro-arfvedsonite data
Locality Data:Click here to view Hohenberg quarries, Berkum, Wachtberg, Rhein-Sieg-Kreis, Cologne, North Rhine-Westphalia, Germany
Photo GalleryView Gallery (3 photos)
Data Identifiers
Mindat Occurrence Record ID:405593
Long-form Identifier:1:3:405593:8
GUID (UUID V4):0
Nearest other occurrences of Magnesio-fluoro-arfvedsonite
30.4km (18.9 miles) ⓘCaspar quarry, Ettringen, Vordereifel, Mayen-Koblenz, Rhineland-Palatinate, Germany
References
Vieten, K. (1965) Mangan-reicher Fluotaramit aus dem Alkalitrachyt der Hohenburg bei Berkum. Neues Jahrbuch für Mineralogie, Monatshefte, 6. 166-175
Frechen, J. (1976) Siebengebirge am Rhein, Laacher Vulkangebiet, Maargebiet der Westeifel - Vulkanologisch-petrographische Exkursionen. Bornträger Berlin Stuttgart.
 
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