Classification of Caysichite-(Y) |
| IMA status: | Approved |
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| Strunz 8th edition ID: | 8/F.36-05
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| Nickel-Strunz 10th (pending) edition ID: | 9.DJ.15
9 : SILICATES (Germanates) D : Inosilicates J : Inosilicates with 4-periodic double and triple chains |
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| Dana 8th edition ID: | 70.1.2.2
70 : INOSILICATES Column or Tube Structures 1 : Column or Tube Structures with columnar silicate units |
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| Hey's CIM Ref.: | 17.4.11
17 : Silicates Containing other Anions 4 : Silicates with carbonates |
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| mindat.org URL: | http://www.mindat.org/min-922.html Please feel free to link to this page. |
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Type Occurrence of Caysichite-(Y) |
| Type Locality: | Evans-Lou Mine, St-Pierre-de-Wakefield, Portland Township, Papineau Co., Québec, Canada |
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Physical Properties of Caysichite-(Y) |
| Hardness (Mohs): | 4½ |
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Optical Data of Caysichite-(Y) |
| Type: | Biaxial (-) |
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| RI values: | nα = 1.586 - 1.589 nβ = 1.614 - 1.616 nγ = 1.621 - 1.626 |
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| 2V: | Measured: 61° , Calculated: 52° to 60° |
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| Maximum Birefringence: | δ = 0.035 - 0.037
 Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration. |
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| Surface Relief: | Moderate |
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| Dispersion: | r > v |
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Chemical Properties of Caysichite-(Y) |
| Formula: | |
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| Essential elements: | C, Ca, H, O, Si, Y |
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| All elements listed in formula: | C, Ca, Gd, H, O, Si, Y |
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Relationship of Caysichite-(Y) to other Species |
| Related Minerals - Nickel-Strunz Grouping): | |
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| Related Minerals - Hey's Index Grouping: | |
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Other Names for Caysichite-(Y) |
| Synonyms: | |
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| Russian names: | |
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Other Information |
| Health Warning: | No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care. |
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References for Caysichite-(Y) |
| Reference List: | American Mineralogist (1976): 61: 174-175.
Mellini, M. and Merlino, S. (1978) Caysichite: a double crankshaft chain structure. Canadian Mineralogist: 16: 81-88.
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Internet Links for Caysichite-(Y) |
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| External Links: | Look for Caysichite-(Y) on WebmineralLook for Caysichite-(Y) on Athena MineralogyLook for Caysichite-(Y) on WikipediaLook for Caysichite-(Y) on Mineralien AtlasRaman and XRD data at RRUFF projectAmerican Mineralogist Crystal Structure DatabaseSearch for Caysichite-(Y) in the Natural History Museum (London) online catalogueCaysichite-(Y) details from Handbook of Mineralogy (PDF) |
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Localities for Caysichite-(Y) |