• Weddellite - Wikipedia

    en.wikipedia.org/wiki/Weddellite Weddellite (Ca C 2 O 4 ·2H 2 O) is a mineral form of calcium oxalate named for occurrences of millimeter-sized crystals found in bottom sediments of the Weddell Sea, off Antarctica.Occasionally, weddellite partially dehydrates to whewellite, forming excellent pseudomorphs of grainy whewellite after weddellite's short tetragonal dipyramids. It was first described in 1942.
  • Weddellite | Definition of Weddellite by Merriam-Webster

    www.merriam-webster.com/dictionary/weddellite Weddellite definition is - a mineral CaC2O4.2H2O consisting of hydrous oxalate of calcium that is polymorphous with whewellite and is found as tiny isolated crystals in mud at the bottom of the Weddell sea, Antarctica.
  • Weddellite | definition of weddellite by Medical dictionary

    medical-dictionary.thefreedictionary.com/weddellite weddellite: ( wed'del-īte ), A dihydrate of calcium oxalate; found in renal calculi. Compare: whewellite . [for Weddell Sea, after James Weddell, Eng. navigator (1787-1834), + -ite]
  • Weddellite - an overview | ScienceDirect Topics

    www.sciencedirect.com/topics/medicine-and-dentistry/weddellite Weddellite can be found as authogenic crystals in sea floor mud. It also has been reported in peat bearing sediments and in calcite bearing lacustrine sediments. It occurs with whewellite, urea, phosphammite, and aphthitalite. Together, whewellite and weddellite are the most common renal calculi (kidney stones).
  • Weddellite: Mineral information, data and localities.

    www.mindat.org/min-4254.html NOTE: Cleaning of any specimens with oxalic acid will lead to crystallisation of whewellite or weddellite if Ca-bearing soluble species are present on the specimen. Contains zeolitic water. May occur in coral reefs. These observations, as well as confirmation of an additional water site, and the current formula, are taken from Mills & Christy ...
  • Weddellite Mineral Data

    webmineral.com/data/Weddellite.shtml Visit our Advertisers for Weddellite : A Bijoux Google Search for Weddellite Dakota Matrix Minerals Google Search for Weddellite John Betts Fine Minerals Search for Weddellite McDougall Minerals Google Search for Weddellite Rock and Mineral Shows Google Search for Weddellite Weinrich Minerals, Inc. Google Search for Weddellite. Ask about ...
  • Gibson Consulting: Kidney Stones

    www.gravmag.com/kstones.shtml Like whewellite, weddellite is a calcium oxalate. They differ in the amount of water that is included in their crystal structures, and this gives them very different crystal habits. Occasionally, weddellite partially dehydrates to whewellite, forming excellent pseudomorphs of grainy whewellite after weddellite's short tetragonal dipyramids.
  • David S Goldfarb (@weddellite) | Twitter

    twitter.com/weddellite The latest Tweets from David S Goldfarb (@weddellite). Stone former, stone preventer https://t.co/xZtrjJaTsQ. New York NY
  • UpToDate

    www.uptodate.com/.../interpretation-of-kidney-stone-composition-analysis Calcium oxalate can be found in monohydrate (crystal name: whewellite) and dihydrate (crystal name: weddellite) forms . Calcium oxalate can also be present in combination with uric acid or calcium phosphate.
  • Whewellite - Wikipedia

    en.wikipedia.org/wiki/Whewellite Whewellite is a mineral, hydrated calcium oxalate, formula Ca C 2 O 4 ·H 2 O. Because of its organic content it is thought to have an indirect biological origin; this hypothesis is supported by its presence in coal and sedimentary nodules. However, it has also been found in hydrothermal deposits where a biological source appears improbable ...