Bot´ry`o`gen

(Min.) A hydrous sulphate of iron of a deep red color. It often occurs in botryoidal form.

Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.

References in periodicals archive

Associated minerals include botryogen, copiapite, anhydrite, gypsum, melanterite, marcasite and sulfur.

Botryogen [MgFe.sup.3+][([SO.sub.4]).sub.2](OH).7[H.sub.2]O

Famous Mineral Localities: RUDABANYA, HUNGARY

Also in his stock were colorful (but unfortunately unstable) fine crystals of the iron sulfates voltaite, coquimbite and botryogen. In addition, rhomboclase was found as stalactitic clusters; all of these came from abandoned workings in the Alfredo pit of the Rio Tinto mine, Huelva province, Spain.

Barcelona Show 1999

Botryogen Mg[Fe.sup.3+][([SO.sub.4]).sub.2](OH)*7[H.sub.2]O

THE MINERALS OF ALUM CAVE BLUFF GREAT SMOKY MOUNTAINS, TENNESSEE

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