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|Location is approximate, estimate based on other nearby localities.|
|Latitude & Longitude (WGS84):||42° North , 1° East (est.)|
|Margin of Error:||~62km|
|Other/historical region names associated with this locality:||Midi-Pyrénées|
North zone of L'Aston Massif.
Hematite mine in Middle-Devonian iron-rich dolomites.
Siderite, hematite, pyrite, dolomite, quartz lenses in dolomites.
Blue beryl has been found with ferroan dolomite in cracks affecting these lenses.
- Bec, F. (1991). "Lassur, un nouvel indice français de parisite." Minéraux et Fossiles(188),pp:7-11.
13 valid minerals.
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