Dark Collection

Bournonite with Quartz, Herodsfoot Mine, Lanreath, Cornwall, England
Steel-grey twinned bournonite crystals, in distinctive cog wheel formation, with colourless quartz

Slate Plaque, Neville Northy Burnard (1818-1878)
Slate plaque of the head of a bearded man, wearing a medieval hat and coif. A coif was a close-fitting linen cap that that tied under the chin - it was worn by both men and women

Study for the carter in The Lighting Up Time, Stanhope Forbes (1857-1947)
Oil on canvas, Newlyn School, late 19th century. The Lighting Up Time was completed in 1902 and there are several studies for different elements of the painting in existence

Hematite, Buxton, England
Massive, compact, water worn hematite, dark red in colour. The specimen label states Iron Ore, the best pieces are used for burnishing when polished - from Buxton or thereabouts

Clinoclase, St Day, Gwennap, Cornwall, England
Spheroidal clinoclase coating liroconite, 4.5 cm in diameter. The specimen is probably from Wheal Gorland or Wheal Unity

Cassiterite, Wheal Maudlin, Lostwithiel (formerly in Lanlivery Parish), Cornwall, England
A superb twinned crystal of cassiterite. In Cornwall, cassiterite is concentrated in hydrothermal veins and pegmatites associated with granite intrusions

Cassiterite Partly Replacing Orthoclase, Wheal Coates, St Agnes, Cornwall, England
Twinned crystals of orthoclase feldspar partially replaced by cassiterite

Cassiterite, St Agnes, Cornwall, England
Large crystals of cassiterite, varying from black to dark brown in colour. In Cornwall, cassiterite is concentrated in hydrothermal veins and pegmatites associated with granite intrusions

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