Botryogen is an orange-red hydrous magnesium sulphate mineral with the chemical formula MgFe3+(SO42(OH) · 7H2O. Its name comes from the Greek botrys, for “grape”, and genos, meaning “to yield”, alluding to the grape-shaped masses found at its type locality in Falun, Sweden. It is also known as quetenite.

Botryogen typically occurs in arid climates as a secondary product of the alteration of pyrite-bearing deposits. Crystals have a prismatic shape, and commonly appear in botroiydal or globular aggregates or radial sprays. It has a Mohs hardness of 2-2.5, and an ochre-yellow streak.


Image sources: 1, 2, 3


Colour: red to orange

Found in: many locations worldwide

From the Greek βότρυς = “bunch of grapes,” and γευυăυ = “to bear,” in allusion to the appearance of the original botryoidal and stalactitic masses found at Falun, Sweden. Partially soluble in boiling water,This stone brings about a reawakening of sexual appetited, particularly when it has been repressed for so long, or stopped due to celibacy or even relationship difficulties.


Bandy (1938) American Mineralogist: 23: 749 (as Kubeite).

Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II. John Wiley and Sons, Inc., New York, 7th edition, revised and enlarged, 1124 pp.: 617-618.

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