Aesthetic and brilliant botryoidal hematite from a Scotish locality not well represented in collections. On a reddish baryte matrix.

Size: 8.0 x 7.2 x 4.5 cm.

Ex-col Daunis (Barcelona)

I purchased this specimen more than 10 years ago to the dissapeared dealer Baikal Geo (Madrid). It consists in a rich group of fibrous to prismatic aggregates of brilliant, transparent to white cerussite on a goethite matrix. This specimen is labeled from Trevellance mine, a very old Cornish mine worked for some time during the 1840s. Very interesting specimen from a rare English locality.

Size: 5.2 x 4.7 x 2.8 cm.
Main crystal: 8 x 2 mm.

Brilliant group of chalcopyrite crystals, twinned and with complex forms, but with well defined faces and edges. The golden color, with iridescence, indicates that it is a "old" specimen. The piece comes from an interesting and classic English locality where few chalcopyrite specimens are known with this quality. These specimens were obtained at the beginning of XX century, it is a very "old" mineralogical sample from Clemens A. Winkler, german chemist who discovered the Germanium.

Size: 6.0 x 3.8 x 3.6 cm.
Main crystal: 8 x 8 mm.
Found in ±1900.

Excol. Clemens A. Winkler (1838-1904).