• 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. For this reason, it may be classed as a true mineral.
  • Whewellite | Definition of Whewellite by Merriam-Webster

    www.merriam-webster.com/dictionary/whewellite Whewellite definition is - a mineral CaC2O4.H2O consisting of calcium oxalate occurring in colorless or white monoclinic crystals polymorphous with weddellite.
  • Whewellite | Definition of Whewellite at Dictionary.com

    www.dictionary.com/browse/whewellite Whewellite definition, a white or colorless mineral of organic origin, calcium oxalate monohydrate, Ca(C2O4)⋅H2O, one of the main crystalline components of kidney stones and urinary precipitates; also found in coal deposits. See more.
  • Whewellite: Mineral information, data and localities.

    www.mindat.org/min-4276.html Named in honor William Whewell (24 May 1794, Lancaster, Lancashire, England - 6 March 1866, Cambridge, Cambridgeshire, England), naturalist and scientist, Professor of Moral Philosophy and inventor of the system of crystallographic indexing.
  • WHEWELLITE (Hydrated Calcium Oxalate)

    www.galleries.com/Whewellite Whewellite is possibly the best known of the crystalline organic minerals. Amber, which is quite well known, is often placed in the Organic Minerals Class, but it lacks a crystalline structure. Some mineral purists might not agree that whewellite is a mineral at all as they tend to dislike any organic connection to minerals (see annapaite).In the example of whewellite, not only is there a ...
  • 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.
  • 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. Because ... The content on the UpToDate website is not intended nor recommended as a substitute for medical advice, diagnosis, or ...
  • Whewellite Mineral Data

    www.webmineral.com/data/Whewellite.shtml Visit our Advertisers for Whewellite : A Bijoux Google Search for Whewellite Dakota Matrix Minerals Google Search for Whewellite John Betts Fine Minerals Search for Whewellite McDougall Minerals Google Search for Whewellite Rock and Mineral Shows Google Search for Whewellite Weinrich Minerals, Inc. Google Search for Whewellite. 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.
  • Kidney stone analysis: “Give me your stone, I will tell ...

    www.ncbi.nlm.nih.gov/pmc/articles/PMC4308647 Stone analysis is an important part in the evaluation of patients having stone disease. This could orientate the physician toward particular etiologies. Chemical and physical methods are both used for analysis. Unfortunately, chemical methods often are inadequate to analyze accurately urinary ...