Classification of Thadeuite |
| IMA status: | Approved 1978 |
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| Strunz 8th edition ID: | 7/B.25-80
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| Nickel-Strunz 10th (pending) edition ID: | 8.BH.05
8 : PHOSPHATES, ARSENATES, VANADATES B : Phosphates, etc., with additional anions, without H2O H : With medium-sized and large cations, (OH,etc.):RO4 = 1:1 |
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| Dana 8th edition ID: | 41.5.16.1
41 : ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN 5 : (AB)2(XO4)Zq |
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| Hey's CIM Ref.: | 19.14.13
19 : Phosphates 14 : Phosphates of Fe and other metals |
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| mindat.org URL: | http://www.mindat.org/min-3929.html Please feel free to link to this page. |
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Type Occurrence of Thadeuite |
| Type Locality: | Panasqueira Mines, Panasqueira, Covilhã, Castelo Branco District, Portugal |
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| General Appearance of Type Material: | Massive, coarse-grained cleavable material with a vitreous luster. |
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| Place of Conservation of Type Material: | Smithsonian and Department of Geology and Mineralogy, University of Michigan |
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| Year of Discovery: | 1979 |
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| Geological Setting of type material: | hydrothermal tin-tungsten veins |
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Physical Properties of Thadeuite |
| Lustre: | Dull |
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| Diaphaneity (Transparency): | Transparent |
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| Colour: | yellow-orange, brown |
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| Streak: | white |
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| Hardness (Mohs): | 3½ - 4 |
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| Cleavage: | Distinct/Good {010} |
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| Density (measured): | 3.24 - 3.26 g/cm3 |
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| Density (calculated): | 3.21 g/cm3 |
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Crystallography of Thadeuite |
| Crystal System: | Orthorhombic |
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| Class (H-M): | 2 2 2 - Disphenoidal |
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| Space Group: | C2 2 21 |
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| Cell Parameters: | a = 6.41Å, b = 13.56Å, c = 8.54Å
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| Ratio: | a:b:c = 0.473 : 1 : 0.63 |
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| Unit Cell Volume: | V 742.29 ų (Calculated from Unit Cell) |
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Optical Data of Thadeuite |
| Type: | Biaxial (-) |
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| RI values: | nα = 1.568 nβ = 1.597 nγ = 1.600 |
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| 2V: | Measured: 33° , Calculated: 34° |
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| Maximum Birefringence: | δ = 0.032
 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 strong |
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| Pleochroism: | Non-pleochroic |
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Chemical Properties of Thadeuite |
| Formula: | |
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| Essential elements: | Ca, H, Mg, O, P |
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| All elements listed in formula: | Ca, F, Fe, H, Mg, O, P |
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Relationship of Thadeuite to other Species |
| Related Minerals - Nickel-Strunz Grouping): | | 8.BH.10 | Durangite | | | 8.BH.10 | Isokite | | | 8.BH.10 | Lacroixite | | | 8.BH.10 | Maxwellite | | | 8.BH.10 | Panasqueiraite | | | 8.BH.10 | Tilasite | | | 8.BH.15 | Drugmanite | | | 8.BH.20 | Bjarebyite | | (Ba,Sr)(Mn | | ,Fe | | ,Mg) | | Al | | [OH|PO | | ] | | |
| | 8.BH.20 | Cirrolite | | | 8.BH.20 | Kulanite | | Ba(Fe | | ,Mn | | ,Mg) | | (Al,Fe | | ) | | [OH|PO | | ] | | |
| | 8.BH.20 | Penikisite | | | 8.BH.20 | Perloffite | | | 8.BH.20 | Johntomaite | | | 8.BH.25 | Bertossaite | | (Li,Na) | | (Ca,Fe | | ,Mn | | )Al | | [(OH,F)|PO | | ] | | |
| | 8.BH.25 | Palermoite | | | 8.BH.30 | Carminite | | | 8.BH.30 | Sewardite | | | 8.BH.35 | Adelite | | | 8.BH.35 | Arsendescloizite | | | 8.BH.35 | Austinite | | | 8.BH.35 | Cobaltaustinite | | | 8.BH.35 | Conichalcite | | | 8.BH.35 | Duftite | | | 8.BH.35 | Gabrielsonite | | | 8.BH.35 | Nickelaustinite | | | 8.BH.35 | Tangeite | | | 8.BH.35 | Gottlobite | | | 8.BH.40 | Čechite | | | 8.BH.40 | Descloizite | | | 8.BH.40 | Mottramite | | | 8.BH.40 | Pyrobelonite | | | 8.BH.45 | Bayldonite | | | 8.BH.45 | Vésigniéite | | | 8.BH.50 | Paganoite | | | 8.BH.55 | Jagowerite | | | 8.BH.60 | Attakolite | | (Ca,Sr)Mn(Al,Fe) | | [(OH) | | |(SiO | | ,PO | | )|(HPO | | ,PO | | ) | | ] |
| | 8.BH.65 | Leningradite | |
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| Related Minerals - Hey's Index Grouping: | | 19.14.1 | Cyrilovite | | | 19.14.2 | Kidwellite | | | 19.14.3 | Rosemaryite | | (Na,Ca,Mn)(Mn,Fe | | )(Fe | | ,Mg)Al(PO | | ) | | |
| | 19.14.4 | Wyllieite | | (Na,Ca,Mn)(Mn,Fe)(Fe,Mg)Al(PO | | ) | | |
| | 19.14.5 | Ferrowyllieite | | (Na,Ca,Mn)(Fe,Mn)(Fe,Fe,Mg)Al(PO | | ) | | |
| | 19.14.6 | Natrodufrénite | | NaFe | | (Fe | | ,Al) | | [(OH) | | |(PO | | ) | | ] | | · 2H | | O |
| | 19.14.7 | Leucophosphite | | | 19.14.8 | Spheniscidite | | (NH | | ,K)(Fe | | ,Al) | | [OH|(PO | | ) | | ] · 2H | | O |
| | 19.14.9 | Burangaite | | (Na,Ca | | )(Fe | | ,Mg)Al | | [(OH,O) | | |(PO | | ) | | ] | | · 2H | | O |
| | 19.14.10 | Satterlyite | | | 19.14.11 | Ushkovite | | | 19.14.12 | Garyansellite | | | 19.14.14 | Anapaite | | | 19.14.15 | Xanthoxenite | | | 19.14.16 | Calcioferrite | | | 19.14.17 | Mitridatite | | | 19.14.18 | Mélonjosephite | | | 19.14.19 | Delvauxite | | CaFe | | (PO | | ,SO | | ) | | (OH) | | ·4-6H | | O not confirmed· |
| | 19.14.20 | Collinsite | | | 19.14.21 | Segelerite | | | 19.14.22 | Kingsmountite | | Ca | | (Fe | | ,Mn | | )Al | | [(OH) | | |(PO | | ) | | ] | | · 12H | | O |
| | 19.14.23 | Vauxite | | | 19.14.24 | Metavauxite | | | 19.14.25 | Paravauxite | | | 19.14.26 | Sigloite | | | 19.14.27 | Cacoxenite | | | 19.14.28 | Koninckite | | | 19.14.29 | Lazulite | | | 19.14.30 | Scorzalite | | | 19.14.31 | Souzalite | | (Mg,Fe | | ) | | (Al,Fe | | ) | | [(OH) | | |(PO | | ) | | ] | | · 2H | | O |
| | 19.14.32 | Gormanite | | (Fe | | ,Mg) | | (Al,Fe | | ) | | [(OH) | | |(PO | | ) | | ] | | · 2H | | O |
| | 19.14.33 | Zaïrite | |
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Other Names for Thadeuite |
| 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 |
| Fluorescence in UV light: | nonfluorescent |
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| 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 Thadeuite |
| Reference List: | American Mineralogist (1979): 64: 359-361.
American Mineralogist (1982): 67: 120-125.
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Internet Links for Thadeuite |
| Search Engines: |
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| External Links: | Look for Thadeuite on WebmineralLook for Thadeuite on Athena MineralogyLook for Thadeuite on WikipediaLook for Thadeuite on Mineralien AtlasRaman and XRD data at RRUFF projectAmerican Mineralogist Crystal Structure DatabaseSearch for Thadeuite in the Natural History Museum (London) online catalogueThadeuite details from Handbook of Mineralogy (PDF) |
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| Mineral Dealers: | Buy from David K Joyce mineralsThe Arkenstone - Fine MineralsTop quality minerals from Kristalle of CaliforniaFabre Minerals - search for Thadeuite specimensMineral Classics - Worldwide Collector Quality Minerals and GemsSearch for Thadeuite at Thames Valley MineralsBuy Fine Minerals from mineralsweb.comrare and unusual minerals mainly crystallizedFind Thadeuite on www.crystalclassics.co.ukRare and Unusual minerals at Mineralogical Research CompanyBuy fine minerals and gemstones from Pala InternationalLapis Mineral Magazin |
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Localities for Thadeuite |
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