boxwork

      in geology, honeycomb pattern of limonite (a mixture of hydrous iron and manganese oxide minerals) that remains in the cavity after a sulfide mineral grain has dissolved. The boxwork may be spongelike, triangular, pyramidal, diamondlike, or irregular in shape and may be coloured various shades of ochre and orange through dark brown. The colour and shape of the boxwork can sometimes be used to identify the dissolved sulfide minerals. See gossan.

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Universalium. 2010.

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  • boxwork —    1. A three dimensional network of thin sheets of mineral projecting from a cave wall. The boxwork is vein fillings etched from the cave wall by dissolution of the host limestone and consists mostly of calcite and quartz. It is not common, but… …   Lexicon of Cave and Karst Terminology

  • boxwork — ˈ ̷ ̷ˌ ̷ ̷ noun : a mineral aggregate structure having plates or septa that are often coated with crystals and that intersect at various angles and enclose angular spaces …   Useful english dictionary

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  • Speleothem — Die Decke der Tropfsteinhöhle Kents Cavern in Torquay (England) Als Speläothem oder Höhlenmineral bezeichnet der Speläologe sekundäre Mineralablagerungen in Höhlen. Die am häufigsten vorkommenden Speläotheme sind Höhlensinter (Sinter) aus… …   Deutsch Wikipedia

  • Wind Cave National Park — Wind Cave Nationalpark Wind Cave Nationalpark …   Deutsch Wikipedia

  • Wind Cave National Park — /wind/ a national park in SW South Dakota. 411/2 sq. mi. (107 sq. km). * * * National park, southwestern South Dakota, U.S. Established in 1903 to preserve limestone caverns and unspoiled prairie grassland in the Black Hills, it covers an area of …   Universalium

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