Classification of Chayesite |
| IMA status: | Approved 1987 |
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| Strunz 8th edition ID: | 8/E.22-50
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| Nickel-Strunz 10th (pending) edition ID: | 9.CM.05
9 : SILICATES (Germanates) C : Cyclosilicates M : [Si6O18]12- 6-membered double rings (sechser-Doppelringe) |
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| Dana 8th edition ID: | 63.2.1a.2
63 : CYCLOSILICATES Condensed Rings 2 : Condensed Rings (Milarite - Osumilite group) |
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| Hey's CIM Ref.: | 14.24.6
14 : Silicates not Containing Aluminum 24 : Silicates of Fe, Mg and alkalis |
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| mindat.org URL: | http://www.mindat.org/min-974.html Please feel free to link to this page. |
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Type Occurrence of Chayesite |
| Type Locality: | Moon Canyon, Woodland, Summit Co., Utah, USA |
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| General Appearance of Type Material: | Laths to 100 microns. |
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| Place of Conservation of Type Material: | Smithsonian NMNH 165807 |
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| Year of Discovery: | 1989 |
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| Geological Setting of type material: | Rock forming mineral in lamproite |
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| Associated Minerals at type locality: | |
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Physical Properties of Chayesite |
| Lustre: | Vitreous |
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| Colour: | Blue |
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| Hardness (Mohs): | 5 - 6 |
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| Tenacity: | Brittle |
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| Cleavage: | None Observed |
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| Density (calculated): | 2.68 g/cm3 |
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Crystallography of Chayesite |
| Crystal System: | Hexagonal |
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| Cell Parameters: | a = 10.15Å, c = 14.38Å
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| Ratio: | a:c = 1 : 1.417 |
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| Unit Cell Volume: | V 1,282.99 ų (Calculated from Unit Cell) |
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Optical Data of Chayesite |
| Type: | Uniaxial (+) |
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| RI values: | nω = 1.575 nε = 1.578 |
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| Maximum Birefringence: | δ = 0.003
 Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration. |
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| Surface Relief: | Low |
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| Pleochroism: | Strong |
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| Comments: | O= sky blue
E= colorless |
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Chemical Properties of Chayesite |
| Formula: | |
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| Essential elements: | Fe, K, Mg, O, Si |
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| All elements listed in formula: | Fe, K, Mg, O, Si |
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| Common Impurities: | Ti,Al,Mn,Na,K |
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Relationship of Chayesite to other Species |
| Related Minerals - Nickel-Strunz Grouping): | | 9.CM.05 | Armenite | | | 9.CM.05 | Brannockite | | | 9.CM.05 | Darapiosite | | | 9.CM.05 | Eifelite | | | 9.CM.05 | Merrihueite | | | 9.CM.05 | Milarite | | | 9.CM.05 | Osumilite-(Mg) | | (K,Na)(Mg,Fe) | | (Al,Fe) | | (Si,Al) | | O | | ·H | | O |
| | 9.CM.05 | Osumilite | | (K,Na)(Fe,Mg) | | (Al,Fe) | | (Si,Al) | | O | | ·H | | O |
| | 9.CM.05 | Poudretteite | | | 9.CM.05 | Roedderite | | | 9.CM.05 | Sogdianite | | (K,Na) | | (Li,Fe) | | (Zr,Ti,Fe)Si | | O | | |
| | 9.CM.05 | Sugilite | | | 9.CM.05 | Yagiite | | | 9.CM.05 | Berezanskite | | | 9.CM.05 | Dusmatovite | | K(K,Na,[ ])(Mn | | ,Y,Zr) | | (Zn,Li) | | Si | | O | | |
| | 9.CM.05 | Shibkovite | | | 9.CM.05 | Almarudite | | (K,Na)(Mn | | ,Fe | | ,Mg) | | (Be,Al) | | [Si | | O | | ] |
| | 9.CM.05 | Trattnerite | | | 9.CM.05 | Oftedalite | | | 9.CM.10 | Faizievite | |
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| Related Minerals - Hey's Index Grouping: | |
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Other Names for Chayesite |
| Synonyms: | |
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| German names: | |
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| Russian names: | |
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| Spanish 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 Chayesite |
| Reference List: | American Mineralogist: 74: 1368-1373.
Mineralogical Magazine: 58: 655-662.
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Internet Links for Chayesite |
| Search Engines: |
Look for Chayesite on Google
Look for Chayesite images on Google |
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| External Links: | Look for Chayesite on WebmineralLook for Chayesite on Athena MineralogyLook for Chayesite on WikipediaLook for Chayesite on Mineralien AtlasRaman and XRD data at RRUFF projectAmerican Mineralogist Crystal Structure DatabaseSearch for Chayesite in the Natural History Museum (London) online catalogueChayesite details from Handbook of Mineralogy (PDF) |
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| Mineral Dealers: | Fabre Minerals - search for Chayesite specimensRare and Unusual minerals at Mineralogical Research CompanyBuy fine minerals and gemstones from Pala Internationalrare and unusual minerals mainly crystallizedWendel Minerals - Auktion & ShopHigh-end worldwide specimens & outstanding customer serviceThe Arkenstone - Fine MineralsSearch for Chayesite on minvision.comWright's Rock Shop - excellent mineral specimens since 1970Find Chayesite on www.crystalclassics.co.ukSearch for Chayesite at Thames Valley MineralsWilensky Fine Minerals |
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| Jobs: | Mining & Geology Jobs |
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Localities for Chayesite |
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