• Chalcocite with Calcite and Quartz
  • Chalcocite with Calcite and Quartz
  • Chalcocite with Calcite and Quartz

Chalcocite with Calcite and Quartz

$1,500.00   €1,265  £1,090.00 approx.  

This specimen is priced in US dollars, all other prices are approximate.

ID: CC21188
The Bristol Copper mine in Hartford County, Connecticut, USA, produced world-class specimens of Chalcocite and Bornite during its life, where mining began as early as 1837.  Such specimens are now held in some of the major museums, Yale-Peabody being one.  As far as I know, specimens from this mine are hardly ever seen in private collections and very seldom made available for sale.  This beautifully crystallised Chalcocite is from the Dr Josef Clemente (1899-1987) Collection of southern Germany, a collection which lay dormant for the last 34 years and is now yielding classic material such as this.  On this small miniature, sharp, superbly defined crystals of sooty-black Chalcocite cover a massive, almost totally hidden Chalcocite matrix with overgrowths of bright, milky-white scalenohedral Calcite crystals and a little Quartz.  The Chalcocite forms striated tabular crystals to about 7 mm tall, with chisel-shaped terminations and a powder-like textured surface of sooty Chalcocite.  Such a surface layer is occasionally observed on Chalcocite, a feature which makes this rare specimen all the more interesting.  This is a rare opportunity to acquire a fine and historic specimen from the Bristol Copper mine in Connecticut.


4.0 × 4.8 × 3.1 cm
Calcite, Quartz and Agate, Sulphides, Sulphosalts and Arsenides
Bristol Copper Mine, Bristol, Hartford Co, Connecticut, USA, North America

Minerals on Specimen

Minerals on specimen
Calcite, Chalcocite, Quartz

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