• Quartz var. Chalcedony
  • Quartz var. Chalcedony
  • Quartz var. Chalcedony

Quartz var. Chalcedony

$750.00   €640  £550.00 approx.  

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

ID: CC11460
The Trevascus mine lies towards the south west of Camborne, almost halfway along the railway line to Hayle.  This old mine operated only briefly between 1837 and 1842, producing copper and tin.  But it is for its magnificent specimens of Chalcedony the mine became famous.  All Trevascus Chalcedonies appear quite different on handling and this cabinet specimen is no exception.  What would appear to be a completely solid matrix densely coated with deep clove brown to golden tan Chalcedony stalactites and curtained druses turns out to be entirely hollow.  This forms an epimorph-like shell internally lined with similar Chalcedony stalactites.  It is a majestic beast containing mouth-like openings surrounded by inwardly curved Chalcedony fangs – the stuff of monster movie nightmares, but mineralogist’s dreams. Buy it if you dare!


10.0 × 9.9 × 8.6 cm
Quartz and Agate, Silicates
Trevascus Mine, Carnhell Green, Gwinear, Cornwall, England

Minerals on Specimen

Minerals on specimen

Related Mineral Specimens

Native Gold on Quartz
 Fata Baii, Zlatna, Alba Co, Romania, Europe
Bright metallic intergrown wire and leaf Native Gold in areas to 1.2cm on crystals of Quartz with...
Olivenite on Quartz
 Wheal Unity, St Day, Cornwall, England, Europe
A fine crystal druse of Olivenite on Quartz from Wheal Unity, St. Day, Cornwall. Lustrous dark olive...
Fluorite on Chlorite
 Wheal Trevaunance, St. Agnes, Cornwall, England, Europe
Characteristic crystals of Fluorite clustered over a grey-green Chlorite from the Trevaunance Mine,...
Arsenopyrite with Sphalerite, Quartz and Calcite
 Trepca Complex, Trepca Valley, Kosovska Mitrovica, Kosovo, Europe
An attractive arrangement of metallic silvery crystals of Arsenopyrite with some black Sphalerite...