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whewellite (calcium oxalate, mineral, ... Materials (hierarchy name)) |
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Note: A white to colorless mineral composed of calcium oxalate monohydrate. Whewellite is formed on the surface of marble and limestone due to the presence of microorganisms, such as lichen. It also occurs in geodes, or septarian nodules; associated with coal measures and surrounding rocks with organic material, and in some uranium deposits. As microscopic crystals in living plant cells and as calculi or as a sediment in the human urinary tract. Named for William Whewell an English naturalist, scientist, and inventor of the system of crystallographic indexing. |
Terms: |
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whewellite (preferred,C,U,English-P,D,U,N)
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whewelliet (C,U,Dutch-P,D,U,U)
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Facet/Hierarchy Code: M.MT |
Hierarchical Position:
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![Hierarchy of Materials Facet](/global/images/global_hierarchy.gif)
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Materials Facet |
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.... Materials (hierarchy name) (G) |
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........ materials (substances) (G) |
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............ <materials by composition> (G) |
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![Hierarchy of inorganic material](/global/images/global_hierarchy.gif)
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................ inorganic material (G) |
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![Hierarchy of mineral](/global/images/global_hierarchy.gif)
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.................... mineral (G) |
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![Hierarchy of calcium oxalate](/global/images/global_hierarchy.gif)
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........................ calcium oxalate (G) |
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![Hierarchy of whewellite](/global/images/global_hierarchy.gif)
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............................ whewellite (G) |
Additional Notes: |
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Dutch ..... Een wit tot kleurloos mineraal dat bestaat uit calciumoxalaatmonohydraat. Whewelliet ontstaat op het oppervlak van marmer en kalksteen door de aanwezigheid van micro-organismen, zoals korstmos. Het komt tevens voor in geodes of septarische concreties die worden geassocieerd met koolafzettingen en omliggend gesteente met organisch materiaal, en in sommige uraniumafzettingen. En het is in de vorm van microscopische kristallen te vinden in de levende cellen van planten, en als calculi of sediment in de menselijke urinewegen. Het mineraal is vernoemd naar William Whewell, een Engelse natuurwetenschapper en uitvinder van het kristallografisch indexsysteem. |
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