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Rogerley mine is located within an abandoned quarry of the same name, just east
of the village of Stanhope, in Weardale. The quarry was originally operated during
the mid-19th century as a source of limestone as flux for iron foundries in the
nearby towns of Tow Law and Consett. There is no evidence that the quarry was
ever worked for lead or fluorspar, and these ores were not likely to have been
found in commercial quantities within the quarry.
Rogerley on spathfluorminerals
province of Catamarca has more than a 70% of its surface covered of mountains,
and this fact suppose important minerals resources.Since the Colony period, significant
mineral richness was quarried, and in a particular and intense way during the
second half of the XIXth century and the first half of the XXth.Now, fluorites
are produced and the specimens are very interesting.
Le gisement de fluorine d’El Hammam (Maroc) est situé au Sud de Meknès.C'est
actuellement la plus grosse mine de spath-fluor du Maghreb, ainsi que l’un
des plus gros producteur de fluorine de la chaîne hercynienne. Le principal
filon d’El Hammam s'allonge sur 7km du Sud-Ouest au Nord-Est; les niveaux
d’exploitation s’étagent sur 900m.La longueur
reconnue (du gisement) serait de 13km.La production cumulée a dépassé
le cap des 500000 t en 1983. La fluorine est soit verte, violette, blanche, jaune,
Hammam on spathfluorminerals
In Italy, several mines have been exploited; the most of them being in Lombardy,
in the Trentin and in Sardinia. Silius produced, especially at its beginnings
i.e. in the upper and median parts of the vein, the remarkable crystals of barite,
galena, marcasite and incidentally, fluorite. The mine of Silius is located
in Sardinia, forty kilometers NE of Cagliari, mainly near the village of Silius.
Having a vein with a very great longitudinal extension (3500 m). Silius mine was
exploited by shafts.