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Sa Malesa, Sa Bidda Beccia, Sarroch, Cagliari metropolitan city (Metropolitan City of Cagliari), Sardinia, Italy

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Location is approximate, estimate based on other nearby localities.
 
Latitude & Longitude (WGS84): 39° North , 9° East (est.)
Margin of Error:~10km
Köppen climate type:Csa : Hot-summer Mediterranean climate
Name(s) in local language(s):Sa Malesa, Sa Bidda Beccia, Sarroch, Città metropolitana di Cagliari, Sardegna, Italia
Other/historical region names associated with this locality:Cagliari Province (1859-2016)


Old mine (1800 or before) for arsenopyrite, located in the "sa Bidda Beccia" mining area, near the Monte Nieddu stream and Sa Stria dam, where the Cu-Fe-As mineralisation in quartz gangue is hosted in Palaeozoic schists.

The second world occurrence for bulachite has been reported from the mine dump (Frau & Da Pelo, 2001). The mineral occurs as sparse, whitish, satiny, crumbly polycrystalline aggregates on mansfieldite and goethite encrusting quartzite clasts. Bulachite is intimately mixed with kaolinite, illite and an amorphous allophane-like phase, and with minor amounts of quartz and Fe3+ oxyhydroxides. Bulachite crystals occur as very slender, curved fibres aggregated into radial or sub-parallel groups.


Mineral List


12 valid minerals.

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References

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Baldracco, C. (1854): Cenni sulla costituzione metallifera della Sardegna. Tipografia Marzorati, Torino, 530 pp.
Jervis G. (1881): I tesori sotterranei dell'Italia. Vol. 3: Regioni delle Isole. Sardegna e Sicilia. Addenda ai precedenti volumi. Loescher, Torino, XXII+539 pp.
Billows, E. (1941): I minerali della Sardegna e i loro giacimenti. Tipografia V. Musanti, Cagliari, 167 pp.
Frau, F., Da Pelo, S. (2001): Bulachite, a rare aluminium arsenate from Sardinia, Italy: the second world occurrence. Neues Jahrb. Mineral. Monatsh, 18-26.

Mineral and/or Locality  
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