Druse (geology)

Druse of uvarovite from the Urals (size: 18.3 x 13.1 x 2.0 cm)
Pink dolomite druse with yellow calcite crystals, Ben Hogan Quarry, Lawrence County Zinc District, Arkansas (size: 14.9 x 8.5 x 3.7 cm)

In geology, druse refers to a coating of fine crystals on a rock fracture surface,[1] vein or within a vug or geode.[2]

Druse occurs worldwide, the most common is perhaps quartz druse within voids in chert or agates. Garnet, calcite, dolomite and a variety of minerals may occur as druse coatings.

In jewelry

Because of its sparkling appearance, druse is sometimes used in jewelry making. Both the glittering effect of the tiny crystals and the color of the base mineral are factors when selecting druse for this purpose.

See also

References

  1. ↑ Klein, Cornelis and Cornelius S Hurbut, Jr, Manual of Mineralogy, Wiley, 20th ed. 1985, P. 199 ISBN 0-471-80580-7
  2. ↑ Mindat.org glossary: Druse


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