Classification of Niahite |
| IMA status: | Approved 1977 |
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| Strunz 8th edition ID: | 7/C.23-30
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| Strunz 9th edition ID: | 8.CH.20
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| Nickel-Strunz 10th (pending) edition ID: | 8.CH.20
8 : PHOSPHATES, ARSENATES, VANADATES C : Phosphates without additional anions, with H2O H : With large and medium-sized cations, RO4:H2O < 1:1 |
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| Dana 8th edition ID: | 40.1.2.2
40 : HYDRATED NORMAL PHOSPHATES,ARSENATES AND VANADATES 1 : AB(XO4)·xH2O |
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| Hey's CIM Ref.: | 19.12.5
19 : Phosphates 12 : Phosphates of Mn |
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| mindat.org URL: | http://www.mindat.org/min-2893.html Please feel free to link to this page. |
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Type Occurrence of Niahite |
| Type Locality: | Niah Great Cave (Gunong Jerneb), Sarawak, Borneo, Malaysia |
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| General Appearance of Type Material: | fine radiating and sub-parallel clusters of crystals up to 0.5mm in size |
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| Place of Conservation of Type Material: | West Australian Government Chemical Laboratories, Perth, Australia ; the Malaysian Geological Survey in Kuching;the Bureau of Mineral Resources, Canberra, Australia |
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| Geological Setting of type material: | cave |
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| Associated Minerals at type locality: | |
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Physical Properties of Niahite |
| Density (measured): | 2.39 g/cm3 |
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| Density (calculated): | 2.437 g/cm3 |
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Crystallography of Niahite |
| Crystal System: | Orthorhombic |
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| Class (H-M): | mm2 - Pyramidal |
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| Space Group: | Pmn21 |
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| Cell Parameters: | a = 5.68Å, b = 8.78Å, c = 4.88Å
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| Ratio: | a:b:c = 0.647 : 1 : 0.556 |
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| Unit Cell Volume: | V 243.37 ų (Calculated from Unit Cell) |
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| X-Ray Powder Diffraction: | | d-spacing | | Intensity | | 8.82 | | (100) | | 4.79 | | (50) | | 4.267 | | (60) | | 3.412 | | (40) | | 2.845 | | (80) | | 2.832 | | (90) | | 2.513 | | (30) | | 2.437 | | (30) | | 2.367 | | (30) | | 2.300 | | (40) |
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Optical Data of Niahite |
| Type: | Biaxial (-) |
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| RI values: | nα = 1.582 nβ = 1.604 nγ = 1.609 |
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| 2V: | Measured: 54° , Calculated: 50° |
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| Maximum Birefringence: | δ = 0.027
 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 moderate |
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Chemical Properties of Niahite |
| Formula: | |
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| Essential elements: | H, Mn, N, O, P |
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| All elements listed in formula: | H, Mg, Mn, N, O, P |
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Relationship of Niahite to other Species |
| Related Minerals - Nickel-Strunz Grouping): | | 8.CH.05 | Walentaite | | H(Ca,Mn | | ,Fe | | )Fe | | [(AsO | | ,PO | | )] | | · 7H | | O |
| | 8.CH.10 | Anapaite | | | 8.CH.15 | Picropharmacolite | | Ca | | Mg[(HAsO | | ) | | |(AsO | | ) | | ] · 11H | | O |
| | 8.CH.20 | Dittmarite | | | 8.CH.25 | Francoanellite | | | 8.CH.25 | Taranakite | | | 8.CH.30 | Schertelite | | | 8.CH.35 | Hannayite | | | 8.CH.40 | Struvite | | | 8.CH.40 | Struvite-K | | | 8.CH.45 | Rimkorolgite | | (Mg,Mn) | | (Ba,Sr,Ca)(PO | | ) | | ·8H | | O |
| | 8.CH.50 | Bakhchisaraitsevite | | | 8.CH.55 | Fahleite | | | 8.CH.55 | Smolyaninovite | | | 8.CH.55 | Smolianinovite | | (Co,Ni,Mg,Ca) | | (Fe | | ,Al) | | (AsO | | ) | | ·11H | | O |
| | 8.CH.60 | Barahonaite-(Al) | | (Ca,Cu,Na,Fe | | ,Al) | | Al | | (AsO | | ) | | (OH,Cl) | | ·nH | | O |
| | 8.CH.60 | Barahonaite-(Fe) | | (Ca,Cu,Na,Fe | | ,Al) | | Fe | | (AsO | | ) | | (OH,Cl) | | ·nH | | O |
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| Related Minerals - Hey's Index Grouping: | | 19.12.1 | Metaswitzerite | | | 19.12.2 | Bermanite | | | 19.12.3 | Natrophilite | | | 19.12.4 | Sidorenkite | | | 19.12.6 | Robertsite | | | 19.12.7 | Pararobertsite | | | 19.12.8 | Sinkankasite | | | 19.12.9 | Mangangordonite | | | 19.12.10 | Heterosite | | | 19.12.11 | Purpurite | | | 19.12.12 | Wolfeite | | | 19.12.13 | Triploidite | | | 19.12.14 | Lipscombite | | | 19.12.15 | Frondelite | | | 19.12.16 | Rockbridgeite | | | 19.12.17 | Kryzhanovskite | | | 19.12.18 | Landesite | | Mn | | Fe | | [(OH) | | |(PO | | ) | | ] · (3-x)H | | O |
| | 19.12.19 | Phosphoferrite | | | 19.12.20 | Reddingite | | | 19.12.21 | Earlshannonite | | | 19.12.22 | Hureaulite | | | 19.12.23 | Switzerite | | | 19.12.24 | Laueite | | | 19.12.25 | Pseudolaueite | | | 19.12.26 | Strunzite | | | 19.12.27 | Stewartite | | | 19.12.28 | Alluaudite | | (Na,Ca)Mn | | (Fe | | ,Mn | | ,Fe | | ,Mg) | | (PO | | ) | | |
| | 19.12.29 | Ferroalluaudite | | | 19.12.30 | Fillowite | | {Mn | | }{Na | | }{Ca | | Na | | }{(Mn | | ,Fe | | ) | | }[PO | | ] | | |
| | 19.12.31 | Johnsomervilleite | | {Ca}{Na | | [ ] | | }{Ca | | Na | | }{(Fe | | ,Mg,Mn | | ) | | }[PO | | ] | | |
| | 19.12.32 | Wicksite | | NaCa | | (Fe | | ,Mn | | ) | | MgFe | | [PO | | ] | | · 2H | | O |
| | 19.12.33 | Dickinsonite-(KMnNa) | | {KNa}{Mn | | [ ]}{Ca}{Na | | }{Mn | | }{Al}[(OH) | | |(PO | | ) | | ] |
| | 19.12.34 | Sarcopside | | | 19.12.35 | Ludlamite | | | 19.12.36 | Graftonite | | | 19.12.37 | Wilhelmvierlingite | | | 19.12.38 | Fairfieldite | | | 19.12.39 | Beusite | | | 19.12.40 | Messelite | | | 19.12.41 | Jahnsite-(CaMnFe) | | | 19.12.42 | Jahnsite-(CaMnMn) | | | 19.12.43 | Jahnsite-(CaMnMg) | | CaMn | | (Mg,Fe | | ) | | Fe | | (PO | | ) | | (OH) | | · 8H | | O |
| | 19.12.44 | Keckite | | (Ca,Mg)(Mn | | ,Zn) | | Fe | | (PO | | ) | | (OH) | | · 2H | | O |
| | 19.12.45 | Stanfieldite | | | 19.12.46 | Laubmannite | | | 19.12.47 | Zodacite | | | 19.12.48 | Hagendorfite | | | 19.12.49 | Maghagendorfite | | | 19.12.50 | Varulite | | | 19.12.51 | Griphite | | Na | | Li | | Ca | | (Mn | | ,Fe | | ,Mg) | | Al | | [(F,OH)|(PO | | ) | | ] | | |
| | 19.12.52 | Attakolite | | (Ca,Sr)Mn(Al,Fe) | | [(OH) | | |(SiO | | ,PO | | )|(HPO | | ,PO | | ) | | ] |
| | 19.12.53 | Arrojadite-(KFe) | | {KNa}{Fe | | [ ]}{Ca}{Na | | [ ]}{Fe | | }{Al}[(OH) | | |HPO | | |(PO | | ) | | ] |
| | 19.12.54 | Lun'okite | | (Mn,Ca)(Mg,Fe,Mn)Al(PO | | ) | | OH·4H | | O |
| | 19.12.55 | Eosphorite | | | 19.12.56 | Ernstite | | (Mn | | ,Fe | | )Al[(OH,O) | | |PO | | ] · H | | O |
| | 19.12.57 | Childrenite | | | 19.12.58 | Bobfergusonite | | | 19.12.59 | Qingheiite | | | 19.12.60 | Whiteite-(CaFeMg) | | Ca(Fe | | ,Mn | | )Mg | | Al | | (PO | | ) | | (OH) | | · 8H | | O |
| | 19.12.61 | Whiteite-(CaMnMg) | | | 19.12.62 | Whiteite-(MnFeMg) | | (Mn | | ,Ca)(Fe | | ,Mn | | )Mg | | Al | | (PO | | ) | | (OH) | | · 8H | | O |
| | 19.12.63 | Rittmannite | | (Mn | | ,Ca)Mn | | (Fe | | ,Mn | | ,Mg) | | (Al,Fe | | ) | | (PO | | ) | | (OH) | | · 8H | | O |
| | 19.12.64 | Zanazziite | | Ca | | (Mg,Fe)(Mg,Fe,Al) | | Be | | [(OH) | | |(PO | | ) | | ] · 6H | | O |
| | 19.12.65 | Samuelsonite | | (Ca,Ba)Ca | | Fe | | Mn | | Al | | [(OH) | | |(PO | | ) | | ] |
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Other Names for Niahite |
| Synonyms: | |
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| German names: | |
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| Japanese 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 Niahite |
| Reference List: | Mineralogical Magazine (1983): 47: 79-80.
American Mineralogist (1984): 69: 408.
Doklady Akademii Nauk SSSR (1995) 342: 40.
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Internet Links for Niahite |
| Search Engines: |
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| External Links: | Look for Niahite on WebmineralLook for Niahite on Athena MineralogyLook for Niahite on WikipediaLook for Niahite on Mineralien AtlasRaman and XRD data at RRUFF projectAmerican Mineralogist Crystal Structure DatabaseSearch for Niahite in the Natural History Museum (London) online catalogueNiahite details from Handbook of Mineralogy (PDF) |
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Localities for Niahite |
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