Classification of Franciscanite |
| IMA status: | Approved 1985 |
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| Strunz 8th edition ID: | 8/B.09-10
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| Nickel-Strunz 10th (pending) edition ID: | 9.AF.75
9 : SILICATES (Germanates) A : Nesosilicates F : Nesosilicates with additional anions; cations in [4], [5] and/or only [6] coordination |
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| Dana 8th edition ID: | 52.4.1.4
52 : NESOSILICATES Insular SiO4 Groups and O,OH,F,H2O 4 : Insular SiO4 Groups and O, OH, F, and H2O with cations in [6] and/or >[6] coordination |
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| Hey's CIM Ref.: | 17.7.2
17 : Silicates Containing other Anions 7 : Silicates with vanadate, arsenate or antimonate |
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| mindat.org URL: | http://www.mindat.org/min-1590.html Please feel free to link to this page. |
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Type Occurrence of Franciscanite |
| Type Locality: | Pennsylvania mine, San Antonio Valley, Santa Clara Co., California, USA |
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| Year of Discovery: | 1986 |
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Physical Properties of Franciscanite |
| Colour: | brown red, red |
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| Streak: | brownish red |
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| Hardness (Mohs): | 4 |
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| Cleavage: | None Observed |
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Crystallography of Franciscanite |
| Crystal System: | Hexagonal |
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| Cell Parameters: | a = 8.15Å, c = 4.8Å
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| Ratio: | a:c = 1 : 0.589 |
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| Unit Cell Volume: | V 276.11 ų (Calculated from Unit Cell) |
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Chemical Properties of Franciscanite |
| Formula: | |
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| Essential elements: | Mn, O, Si, V |
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| All elements listed in formula: | H, Mn, O, Si, V |
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Relationship of Franciscanite to other Species |
| Related Minerals - Nickel-Strunz Grouping): | |
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| Related Minerals - Hey's Index Grouping: | | 17.7.1 | Suzukiite | | | 17.7.3 | Kurumsakite | | (Zn,Ni,Cu) | | Al | | V | | Si | | O | | ·27H | | O (or near) |
| | 17.7.4 | Ardennite-(As) | | Mn | | [(Al,Mg) | | ][(OH) | | |(AsO | | ,VO | | )|(SiO | | ) | | |Si | | O | | ] |
| | 17.7.5 | Medaite | | | 17.7.6 | Johninnesite | | | 17.7.7 | Tiragalloite | | | 17.7.8 | Dixenite | | CuMn | | Fe | | [(OH) | | |(AsO | | ) | | |AsO | | |(SiO | | ) | | ] |
| | 17.7.9 | Asbecasite | | | 17.7.10 | Mcgovernite | | | 17.7.11 | Kraisslite | | (Mn | | ,Mg) | | Zn | | [(OH) | | |(AsO | | ) | | |(SiO | | ) | | ] |
| | 17.7.12 | Schallerite | | | 17.7.13 | Nelenite | | | 17.7.14 | Kolicite | | | 17.7.15 | Yeatmanite | | | 17.7.16 | Welshite | | | 17.7.17 | Katoptrite | | | 17.7.18 | Parwelite | | | 17.7.19 | Långbanite | | | 17.7.20 | Chapmanite | | | 17.7.21 | Cervandonite-(Ce) | | (Ce,Nd,La)(Fe,Ti,Al) | | SiAs(Si,As)O | | |
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Other Names for Franciscanite |
| 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 Franciscanite |
| Reference List: | American Mineralogist: 71: 1522-1526.
Neues Jahrbuch für Mineralogie, Monatshefte (1985): 493-499.
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Internet Links for Franciscanite |
| Search Engines: |
Look for Franciscanite on Google
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| External Links: | Look for Franciscanite on WebmineralLook for Franciscanite on Athena MineralogyLook for Franciscanite on WikipediaLook for Franciscanite on Mineralien AtlasRaman and XRD data at RRUFF projectAmerican Mineralogist Crystal Structure DatabaseSearch for Franciscanite in the Natural History Museum (London) online catalogueFranciscanite details from Handbook of Mineralogy (PDF) |
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| Mineral Dealers: | Rare and Unusual minerals at Mineralogical Research CompanyWilensky Fine MineralsFine Minerals from Dan Weinrich MineralsFind Franciscanite on www.crystalclassics.co.ukThe Arkenstone - Fine MineralsLapis Mineral MagazinBuy Minerals and Crystals from Crystalarium.comBuy Fine Minerals from mineralsweb.comWright's Rock Shop - excellent mineral specimens since 1970Top quality minerals from Kristalle of CaliforniaFabre Minerals - search for Franciscanite specimensrare and unusual minerals mainly crystallized |
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| Jobs: | Mining & Geology Jobs |
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Localities for Franciscanite |