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Red-brown, light pink, yellow-brown; light pink to light brown in transmitted light.
Sub-Adamantine, Sub-Vitreous, Resinous, Greasy
4½ - 5
Specific Gravity:
Crystal System:
Member of:
Named in 1878 by George Jarvis Brush and Edward Salisbury Dana from TRIPLite and the Greek "eidos", like, alluding to its resemblance to triplite in habit and chemical composition.
Isostructural with:
Hide all sections | Show all sections

Classification of TriploiditeHide

Approved, 'Grandfathered' (first described prior to 1959)

B : Phosphates, etc., with additional anions, without H2O
B : With only medium-sized cations, (OH, etc.):RO4 about 1:1

6 : A2(XO4)Zq

19 : Phosphates
12 : Phosphates of Mn

Physical Properties of TriploiditeHide

Sub-Adamantine, Sub-Vitreous, Resinous, Greasy
Transparent, Translucent
Red-brown, light pink, yellow-brown; light pink to light brown in transmitted light.
White, off-white.
4½ - 5 on Mohs scale
On {010}, good; on {120}, fair; on {110}, very poor.
3.70 g/cm3 (Measured)    3.80 g/cm3 (Calculated)
3.66 - estimated value for pure Mn2+ end-member material.

Optical Data of TriploiditeHide

Biaxial (+)
RI values:
nα = 1.709 - 1.735 nβ = 1.710 - 1.736 nγ = 1.714 - 1.740
Max Birefringence:
δ = 0.005
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
r > v weak
Pleochroism faint in thick grains with absorption Z > X, Y.
2V moderate.

Chemical Properties of TriploiditeHide

IMA Formula:

Crystallography of TriploiditeHide

Crystal System:
Class (H-M):
2/m - Prismatic
Space Group:
Cell Parameters:
a = 12.366 Å, b = 13.276 Å, c = 9.943 Å
β = 108.23°
a:b:c = 0.931 : 1 : 0.749
Unit Cell V:
1,550.42 ų (Calculated from Unit Cell)
Crystals rarely observed, prismatic [001], with the prism zone striated vertically. Parallel-fibrous to columnar aggregates common; also divergent or randomly oriented; fibrous; granular.

X-Ray Powder DiffractionHide

Image Loading

Radiation - Copper Kα
Data Set:
Data courtesy of RRUFF project at University of Arizona, used with permission.
Powder Diffraction Data:
3.41 (50)
3.19 (80)
3.10 (90)
2.94 (100)
2.58 (50)
2.31 (50)
1.80 (60)
Branchville, Connecticut, USA

Type Occurrence of TriploiditeHide

Other Language Names for TriploiditeHide

Relationship of Triploidite to other SpeciesHide

Member of:
Other Members of this group:
Triplite(Mn2+,Fe2+)2(PO4)(F,OH)Mon. 2/m
Wolfeite(Fe2+,Mn2+)2(PO4)(OH)Mon. 2/m : P21/b
Zwieselite(Fe2+,Mn2+)2(PO4)FMon. 2/m : P21/b
Forms a series with:

Common AssociatesHide

Associated Minerals Based on Photo Data:
Seamanite5 photos of Triploidite associated with Seamanite on
Rhodochrosite4 photos of Triploidite associated with Rhodochrosite on
Dickinsonite-(KMnNa)4 photos of Triploidite associated with Dickinsonite-(KMnNa) on
Lithiophilite3 photos of Triploidite associated with Lithiophilite on
Shigaite2 photos of Triploidite associated with Shigaite on
Muscovite1 photo of Triploidite associated with Muscovite on
Beraunite1 photo of Triploidite associated with Beraunite on

Related Minerals - Nickel-Strunz GroupingHide

8.BB.XArsenowagneriteMg2(AsO4)FMon. 2/m : P21/b
8.BB.05AmblygoniteLiAl(PO4)FTric. 1 : P1
8.BB.05MontebrasiteLiAl(PO4)(OH)Tric. 1 : P1
8.BB.05TavoriteLiFe3+(PO4)(OH)Tric. 1 : P1
8.BB.10Triplite(Mn2+,Fe2+)2(PO4)(F,OH)Mon. 2/m
8.BB.10Zwieselite(Fe2+,Mn2+)2(PO4)FMon. 2/m : P21/b
8.BB.15SarkiniteMn2+2(AsO4)(OH)Mon. 2/m : P2/m
8.BB.15Wagnerite(Mg,Fe2+)2(PO4)FMon. 2/m : P21/b
8.BB.15Wolfeite(Fe2+,Mn2+)2(PO4)(OH)Mon. 2/m : P21/b
8.BB.15JoosteiteMn2+(Mn3+,Fe3+)(PO4)OMon. 2/m
8.BB.15HydroxylwagneriteMg2(PO4)(OH)Mon. 2/m : P21/b
8.BB.20HoltedahliteMg2(PO4)(OH)Trig. 3m : P3 1m
8.BB.20Satterlyite(Fe2+,Mg,Fe)12(PO4)5(PO3OH)(OH,O)6Trig. 3m (3 2/m) : P3 1m
8.BB.25AlthausiteMg4(PO4)2(OH,O)(F,☐)Orth. mmm (2/m 2/m 2/m) : Pnma
8.BB.30AdamiteZn2(AsO4)(OH)Orth. mmm (2/m 2/m 2/m) : Pnnm
8.BB.30EveiteMn2+2(AsO4)(OH)Orth. mmm (2/m 2/m 2/m) : Pnnm
8.BB.30LibetheniteCu2(PO4)(OH)Orth. mmm (2/m 2/m 2/m) : Pnnm
8.BB.30OliveniteCu2(AsO4)(OH)Mon. 2/m : P21/m
8.BB.30ZincolibetheniteCuZn(PO4)(OH)Orth. mmm (2/m 2/m 2/m) : Pnnm
8.BB.30ZincoliveniteCuZn(AsO4)(OH)Orth. mmm (2/m 2/m 2/m) : Pnnm
8.BB.30AuriacusiteFe3+Cu2+(AsO4)OOrth. mmm (2/m 2/m 2/m) : Pnnm
8.BB.35ParadamiteZn2(AsO4)(OH)Tric. 1 : P1
8.BB.35TarbuttiteZn2(PO4)(OH)Tric. 1 : P1
8.BB.40BarbosaliteFe2+Fe3+2(PO4)2(OH)2Mon. 2/m : P21/b
8.BB.40Lazulite(Mg,Fe2+)Al2(PO4)2(OH)2Mon. 2/m : P21/b
8.BB.40ScorzaliteFe2+Al2(PO4)2(OH)2Mon. 2/m : P21/b
8.BB.45TrolleiteAl4(PO4)3(OH)3Mon. 2/m : B2/b
8.BB.50NamibiteCu(BiO)2(VO4)(OH)Tric. 1 : P1
8.BB.70TuraniteCu5(VO4)2(OH)4Tric. 1 : P1
8.BB.80FingeriteCu11(VO4)6O2Tric. 1 : P1
8.BB.90ZinclipscombiteZnFe3+2(PO4)2(OH)2Tet. 4 2 2 : P43 21 2

Related Minerals - Dana Grouping (8th Ed.)Hide,Mn2+)2(PO4)(OH)Mon. 2/m : P21/b 2/m : P2/mĕkite(Mn2+,Fe2+,Mg)Fe3+(PO4)OMon.,Fe3+)(PO4)OMon. 2/m

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

19.12.1MetaswitzeriteMn3(PO4)2 · 4H2OMon. 2/m : P2/b
19.12.2BermaniteMn2+Mn3+2(PO4)2(OH)2 · 4H2OMon. 2/m : P2/b
19.12.3NatrophiliteNaMn2+PO4Orth. mmm (2/m 2/m 2/m) : Pmna
19.12.5Niahite(NH4)(Mn2+,Mg)(PO4) · H2OOrth. mm2 : Pmn21
19.12.6RobertsiteCa2Mn3+3(PO4)3O2 · 3H2OMon. m : Bb
19.12.7PararobertsiteCa2Mn3+3(PO4)3O2 · 3H2OMon. 2/m : P21/b
19.12.8SinkankasiteMn2+Al(PO3OH)2(OH) · 6H2OTric.
19.12.9MangangordoniteMn2+Al2(PO4)2(OH)2 · 8H2OTric.
19.12.10Heterosite(Fe3+,Mn3+)PO4Orth. mmm (2/m 2/m 2/m) : Pmna
19.12.11Purpurite(Mn3+,Fe3+)PO4Orth. mmm (2/m 2/m 2/m) : Pmna
19.12.12Wolfeite(Fe2+,Mn2+)2(PO4)(OH)Mon. 2/m : P21/b
19.12.15FrondeliteMn2+Fe3+4(PO4)3(OH)5Orth. 2 2 2 : C2 2 21
19.12.16RockbridgeiteFe2+Fe3+4(PO4)3(OH)5Orth. mmm (2/m 2/m 2/m)
19.12.18LandesiteMn2+3-xFe3+x(PO4)2(OH)x · (3-x)H2OOrth.
19.12.19Phosphoferrite(Fe2+,Mn2+)3(PO4)2 · 3H2OOrth. mmm (2/m 2/m 2/m) : Pmna
19.12.20Reddingite(Mn2+,Fe2+)3(PO4)2 · 3H2OOrth. mmm (2/m 2/m 2/m) : Pmna
19.12.21EarlshannoniteMn2+Fe3+2(PO4)2(OH)2 · 4H2OMon.
19.12.22Hureaulite(Mn,Fe)5(PO4)2(HPO4)2 · 4H2OMon. 2/m : B2/b
19.12.23Switzerite(Mn,Fe)3(PO4)2 · 7H2OMon.
19.12.24LaueiteMn2+Fe3+2(PO4)2(OH)2 · 8H2OTric. 1 : P1
19.12.25PseudolaueiteMn2+Fe3+2(PO4)2(OH)2 · 8H2OMon. 2/m : P21/b
19.12.26StrunziteMn2+Fe3+2(PO4)2(OH)2 · 6H2OTric. 1 : P1
19.12.27StewartiteMn2+Fe3+2(PO4)2(OH)2 · 8H2OTric. 1 : P1
19.12.30Fillowite{Mn2+}{Na8}{Ca4Na4}{(Mn2+,Fe2+)43}(PO4)36Trig. 3 : R3
19.12.32WicksiteNaCa2(Fe2+,Mn2+)4MgFe3+(PO4)6 · 2H2OOrth. mmm (2/m 2/m 2/m)
19.12.33Dickinsonite-(KMnNa){KNa}{Mn2+◻}{Ca}{Na3}{Mn2+13}{Al}(PO4)12(OH)2Mon. 2/m : B2/b
19.12.34Sarcopside(Fe2+,Mn2+,Mg)3(PO4)2Mon. 2/m : P21/b
19.12.35Ludlamite(Fe,Mn,Mg)3(PO4)2 · 4H2OMon. 2/m : P21/b
19.12.36GraftoniteFe2+Fe2+2(PO4)2Mon. 2/m : P21/b
19.12.37WilhelmvierlingiteCaMnFe3+(PO4)2(OH) · 2H2OOrth.
19.12.38FairfielditeCa2(Mn2+,Fe2+)(PO4)2 · 2H2OTric. 1 : P1
19.12.39BeusiteMn2+Mn2+2 (PO4)2Mon.
19.12.40MesseliteCa2(Fe2+,Mn2+)(PO4)2 · 2H2OTric. 1 : P1
19.12.41Jahnsite-(CaMnFe){Ca}{Mn2+}{Fe2+2}{Fe3+2}(PO4)4(OH)2 · 8H2OMon. 2/m : P2/b
19.12.42Jahnsite-(CaMnMn){Ca}{Mn2+}{Mn2+2}{Fe3+2}(PO4)4(OH)2 · 8H2OMon. 2/m : P2/b
19.12.43Jahnsite-(CaMnMg){Ca}{Mn2+}{(Mg,Fe2+)2}{Fe3+2}(PO4)4(OH)2 · 8H2OMon. 2/m : P2/b
19.12.44KeckiteCaMn2+Fe3+2Fe3+2(PO4)4(OH)3(H2O)7Mon. 2/m : P2/b
19.12.47ZodaciteCa4Mn2+Fe3+4(PO4)6(OH)4 · 12H2OMon.
19.12.48HagendorfiteNaCaMn2+Fe2+2(PO4)3Mon. 2/m : B2/b
19.12.50VaruliteNaCaMn2+Mn2+2(PO4)3Mon. 2/m : B2/b
19.12.51GriphiteNa4Li2Ca6(Mn2+,Fe2+,Mg)19Al8(PO4)24(F,OH)8Iso. m3 (2/m 3)
19.12.52Attakolite(Ca,Sr)Mn(Al,Fe)4(HPO4,PO4)3(SiO4,PO4)(OH)4Mon. 2/m : B2/m
19.12.54Lun'okite(Mn,Ca)(Mg,Fe,Mn)Al(PO4)2OH · 4H2OOrth. mmm (2/m 2/m 2/m) : Pbca
19.12.55EosphoriteMn2+Al(PO4)(OH)2 · H2OOrth. mmm (2/m 2/m 2/m) : Cmca
19.12.56Ernstite(Mn2+,Fe3+)Al(PO4)(OH,O)2 · H2OMon.
19.12.57ChildreniteFe2+Al(PO4)(OH)2 · H2OOrth. mm2 : Ccc2
19.12.58BobfergusoniteNa2Mn5FeAl(PO4)6Mon. 2/m : P2/b
19.12.59QingheiiteNaMn3+Mg(Al,Fe3+)(PO4)3Mon. 2/m : P21/b
19.12.60Whiteite-(CaFeMg){Ca}{(Fe2+,Mn2+)}{Mg2}{Al2}(PO4)4(OH)2 · 8H2OMon. 2/m : P21/b
19.12.61Whiteite-(CaMnMg){Ca}{Mn2+}{Mg2}{Al2}(PO4)4(OH)2 · 8H2OMon. 2/m
19.12.62Whiteite-(MnFeMg){(Mn2+,Ca)}{(Fe2+,Mn2+)}{Mg2}{Al2}(PO4)4(OH)2 · 8H2OMon. 2/m : P21/b
19.12.63Rittmannite{(Mn2+,Ca)}{Mn2+}{(Fe2+,Mn2+,Mg)2}{(Al,Fe3+)2}(PO4)4(OH)2 · 8H2OMon.
19.12.64ZanazziiteCa2Mg5Be4(PO4)6(OH)4 · 6H2OMon. 2/m : B2/b
19.12.65Samuelsonite(Ca,Ba)Ca8Fe2+2Mn2+2Al2(PO4)10(OH)2Mon. 2/m : B2/m

Fluorescence of TriploiditeHide

Not fluorescent in UV

Other InformationHide

Soluble in acids.
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for TriploiditeHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Brush and Dana (1878) American Journal of Science: 16: 42, 115, 398.
Dana, E.S. (1892) System of Mineralogy, 6th. Edition, New York: 779.
Kovář and Slavík (1900) Verh. Geol. Reichsanst. Wien: 50: 347 (Herles analysis).
Larsen, E.S. (1921) The Microscopic Determination of the Nonopaque Minerals, First edition, USGS Bulletin 679: 145.
Müllbauer (1925) Zeitschrift für Kristallographie, Mineralogie und Petrographie, Leipzig: 61: 318.
Hägele (1938) Zentralblatt Mineralien: 267.
Kokkoros (1938) Zentralblatt Mineralien: 278.
Richmond (1940) American Mineralogist: 25: 469.
Frondel, C. (1949) American Mineralogist: 34: 692-698.
Zeitschrift für Kristallographie (1970): 131: 1-20.

Internet Links for TriploiditeHide

Localities for TriploiditeHide

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
  • South Australia
    • Eyre Peninsula
      • Middleback Range
        • Iron Knob
Pring, A., Francis, G. & Birch, W. D. (1992): Nissonite, namibite, and other additions to the mineral suite from Iron Monarch, South Australia. Australian Mineral. 6, 31-39; (Steve Sorrell) and refs therein; Pring A, Birch W D (1993) Gatehouseite, a new manganese hydroxy phosphate from Iron Monarch, South Australia. Mineralogical Magazine 57, 309-313
    • Olary Province
      • Boolcoomatta Reserve (Boolcoomata Station; Boolcoomatta)
  • Rio Grande do Norte
    • Borborema mineral province
      • Parelhas
[MinRec 29:196]
  • Manitoba
    • Cross Lake
      • North Group
The Canadian Mineralogist Vol. 36,pp. 367-376 (1998)
  • Northwest Territories
    • Tungsten
The Canadian Mineralogist Vol. 41, pp. 139-160 (2003)
  • Nova Scotia
    • Lunenburg Co.
      • New Ross
Grantham, R.G. (1985) "Index of the Nova Scotia Museum Mineral Collection", Curatorial Report Number 51.
  • Fujian Province
    • Nanping Prefecture
      • Yanping District
        • Nanping pegmatite field (Xikeng pegmatite field)
Rao, C., Wang, R. C., Hatert, F., & Baijot, M. (2014). Hydrothermal transformations of triphylite from the Nanping No. 31 pegmatite dyke, southeastern China. European Journal of Mineralogy, 26(1), 179-188.
  • Guangxi Zhuang Autonomous Region
    • Hechi Prefecture
      • Nandan Co.
Czech Republic
  • Bohemia (Böhmen; Boehmen)
    • Central Bohemia Region
      • Kutná Hora (Kuttenberg)
Povondra, P., Pivec, E. (eds.) et al.: Přibyslavice peraluminuous granite. Acta universitatis carolinae, Geologica, 1987, no. 3, s . 183 – 283.
    • Plzeň Region
      • Domažlice (Taus)
Weber, A.: Fosfáty z pegmatitů jz. Čech. Rozpravy II. třídy České akademie, 1948, roč. 58, č. 1.
  • Western and Inner Finland Region
    • Alavus
H-J Wilke (1976) Mineralfundstellen, Band 4, Skandinavien; Haapala, I. (1966): On the granitic pegmatites in the Peräseinäjoki-Alavus area, South Pohjanmaa, Finland. Bulletin de la Commission Geologique de Finlande. 224.
  • Bavaria
    • Upper Palatinate
      • Pleystein
DILL, H.G., MELCHER, F., GERDES, A. and WEBER, B. (2008): The origin and zoning of hypogene and supergene Fe-Mn-Mg-Sc-U-REE-Zn phosphate mineralization from the newly discovered Trutzhofmühle aplite (Hagendorf pegmatite province, Germany). Canadian Mineralogist 46, 1131-1157.; Dill, H. G., Melcher, F., Gerdes, A., & Weber, B. (2008). The origin and zoning of hypogene and supergene Fe–Mn–Mg–Sc–U–REE phosphate mineralization from the newly discovered Trutzhofmühle aplite, Hagendorf pegmatite province, Germany. The Canadian Mineralogist, 46(5), 1131-1157.
      • Waidhaus
Wittern: "Mineralfundorte in Deutschland", 2001; Dill, H. G., Weber, B., Gerdes, A., & Melcher, F. (2008). The Fe-Mn phosphate apliteSilbergrube'near Waidhaus, Germany: epithermal phosphate mineralization in the Hagendorf-Pleystein pegmatite province. Mineralogical Magazine, 72(5), 1119-1144.
  • Honshu Island
    • Kanto Region
      • Ibaraki Prefecture
        • Kasumigaura City
          • Chiyoda-machi
Matsubara, S. & Kato, A. (1980) Koubutsugaku Zasshi, 14, 269-286.
  • Lower Silesia (Dolnośląskie)
    • Dzierżoniów District
      • Piława Górna (Ober Peilau; Gnadenfrei)
        • DSS Piława Górna Quarry
Pieczka, A., Włodek, A., Gołębiowska, B., Szełęg, E., Szuszkiewicz, A., Ilnicki, S., Nejbert, K., Turniak, K. (2015): Phosphate-bearing pegmatites in the Góry Sowie Block and adjacent areas, Sudetes, SW Poland. 7th International Symposium on Granitic Pegmatites, PEG 2015 Książ, Poland. Abstracts: 77-78
    • Świdnica District
Pieczka, A., Włodek, A., Gołębiowska, B., Szełęg, E., Szuszkiewicz, A., Ilnicki, S., Nejbert, K., Turniak, K. (2015): Phosphate-bearing pegmatites in the Góry Sowie Block and adjacent areas, Sudetes, SW Poland. 7th International Symposium on Granitic Pegmatites, PEG 2015 Książ, Poland. Abstracts: 77-78
  • Eastern-Siberian Region
    • Transbaikalia (Zabaykalye)
      • Chitinskaya Oblast'
P.M. Kartashov data
  • Far-Eastern Region
    • Primorskiy Kray
Gonevchuk, V. G., Korostelev, P. G., & Semenyak, B. I. (2005). Genesis of the Tigrinoe tin deposit (Russia). Geology Of Ore Deposits C/C Of Geologiia Rudnykh Mestorozhdenii, 47(3), 223.
South Africa
  • Northern Cape Province
    • Namakwa District (Namaqualand)
      • Steinkopf
Minerals of South Africa
  • Östergötland
    • Motala
      • Godegård
  • England
    • Cornwall
      • St Just District
        • St Just
          • Botallack
Golley, P. & Williams, R. (1995): Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 104 pp.; Peter G. Embrey (1978) Fourth Supplementary List of British Minerals. Mineralogical Magazine 42:169-177
  • Arizona
    • Yavapai Co.
AmMin 67: 97-113 (1982)
        • Independence Gulch
Am Min 67:97-113
  • Connecticut
    • Fairfield Co.
      • Redding (Reading)
        • Branchville
Brush and Dana (1878); Shainin (1946): American Mineralogist 31: 329-345; Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 671, 855, 938.; Rocks & Minerals (1995) 70:396-409
  • Maine
    • Oxford Co.
      • Newry
King, V. and Foord, E., 1994, Mineralogy of Maine, V. 1; King, V. (ed), 2000, Mineralogy of Maine, V. 2.
      • Rumford
Scott Soucey and Tim Blake specimens
  • New Hampshire
    • Cheshire Co.
      • Walpole
Anna Wilken collection
    • Grafton Co.
      • Groton
Whitmore & Lawrence, 2004. The Pegmatite Mines Known As Palermo, p.95.; USGS Prof Paper 353
    • Rockingham Co.
      • Raymond
Harvard Mineralogical Museum no. 125568; Francis, C. A. (1985): Minerals of the Chandler Mine, A Zoned Lithium Rich Pegmatite (Rocks and Minerals, 60:263-264) ; Rocks & Minerals (2005) 80:242-261 New Hampshire Mineral Locality Index
  • North Carolina
    • Cleveland Co.
      • Kings Mountain District
Rocks and Minerals, (1985) 60:76-82
  • South Dakota
    • Custer Co.
      • Custer District
        • Berne
R&M 75:3 pp 156-169
        • Fourmile
W.C. van Laer, 2008
    • Pennington Co.
      • Keystone District
        • Keystone
R&M 75:3 pp 156-169; USGS Prof Paper 297A
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