| Colour: | Colourless to orange |
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| Name: | After the type locality, Valchov, Moravia, Czech Republic. |
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A polymeric sesquiterpen alcohol. An amber-like mineral.
Occurs in Cenomanian sulphide-rich shales of a coal deposit, and in coal at another deposit.
Originally described from Valchov, Boskovice, South Moravia Region, Moravia (Mähren; Maehren), Czech Republic.