Mindat Logo
Home Page Log In Message Board The Mindat Directory
Register Search Pages Chat Now! (2 online) Mindat Auctions

Symplesite

Big Photo

Saubach Fault, Muldenberg, Klingenthal, Vogtland, Saxony, Germany
© Thomas Witzke

Show Symplesite Photos (11)
Formula:
Fe
2+
3
(AsO
 
4
)
 
2
·8H
 
2
O
System:TriclinicColour:Light green, greenish ...
Hardness:2½
Name:Named from the Greek 'ουν' and 'πλησιαζειν' meaning 'to bring together' because of its relationship with other minerals.
Dimorph of:Parasymplesite


Symplesite Group

The Fe2+ may oxidize to a significant degree to Fe3+ with an accompanying change in colour and optical properties analogous to Vivianite.

Classification of Symplesite

IMA status:Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
Strunz 8th edition ID:7/C.14-10
Nickel-Strunz 10th (pending) edition ID:8.CE.45

8 : PHOSPHATES, ARSENATES, VANADATES
C : Phosphates without additional anions, with H2O
E : With only medium-sized cations, RO4:H2O about 1:2.5
Dana 8th edition ID:40.3.8.1

40 : HYDRATED NORMAL PHOSPHATES,ARSENATES AND VANADATES
3 : A3(XO4)2·xH2O
Hey's CIM Ref.:20.9.6

20 : Arsenates (also arsenates with phosphate, but without other anions)
9 : Arsenates of Fe
mindat.org URL:http://www.mindat.org/min-3851.html
Please feel free to link to this page.

Type Occurrence of Symplesite

Type Locality:Tännig Mt., Bad Lobenstein, Thuringia, Germany
Year of Discovery:1837

Physical Properties of Symplesite

Lustre:Vitreous, Pearly
Diaphaneity (Transparency):Transparent
Comment:Pearly lustre on cleavage planes.
Colour:Light green, greenish black, light blue, indigo blue
Streak:White, bluish white.
Hardness (Mohs):2½
Tenacity:Brittle
Cleavage:Perfect
On {110}, perfect.
Fracture:Irregular/Uneven
Translation gliding:T {1_10}, t[001].
Density (measured):3.01 g/cm3
Density (calculated):3.02 g/cm3
Comment:Measured value on Lobenstien material.

Crystallography of Symplesite

Crystal System:Triclinic
Class (H-M):1 - Pinacoidal
Space Group:P1
Cell Parameters:a = 7.87Å, b = 9.41Å, c = 4.72Å
α = 99.92°, β = 97.38°, γ = 105.96°
Ratio:a:b:c = 0.836 : 1 : 0.502
Unit Cell Volume:V 325.29 ų (Calculated from Unit Cell)
Morphology:Crystals small and imperfect, elongated [001]; flattened {110} at times. Spherical aggregates with a coarsely fibrous, radial structure
Twinning:On {110}

Optical Data of Symplesite

Type:Biaxial (-)
RI values: nα = 1.635 nβ = 1.668 nγ = 1.702
2V:Measured: 87° , Calculated: 88°
Maximum Birefringence:δ = 0.067

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Moderate
Dispersion:r > v strong
Pleochroism:Visible
Comments:X = ┴ (110) = Deep blue
Y = Nearly colourless
Z = ^ c 31½° = Yellowish

Chemical Properties of Symplesite

Formula:
Fe
2+
3
(AsO
 
4
)
 
2
·8H
 
2
O
Essential elements:As, Fe, H, O
All elements listed in formula:As, Fe, H, O

Relationship of Symplesite to other Species

Common Associates:
ScoroditePharmacosideriteLimoniteErythriteAnnabergite
Related Minerals - Nickel-Strunz Grouping):
8.CE.05Chudobaite
(Na,K)(Mg,Zn)
 
2
H(AsO
 
4
)(OH,O)
 
6
8.CE.05Geigerite
Mn
 
5
[HAsO
 
4
|AsO
 
4
]
 
2
 · 10H
 
2
O
8.CE.10Newberyite
MgHPO
 
4
·3H
 
2
O
8.CE.15Brassite
MgHAsO
 
4
·4H
 
2
O
8.CE.20Phosphorrösslerite
MgHPO
 
4
·7H
 
2
O
8.CE.20Rösslerite
MgHAsO
 
4
·7H
 
2
O
8.CE.25Metaswitzerite
Mn
 
3
(PO
 
4
)
 
2
·4H
 
2
O
8.CE.25Switzerite
(Mn,Fe)
 
3
(PO
 
4
)
 
2
·7H
 
2
O
8.CE.30Lindackerite
CuCu
 
4
[HAsO
 
4
|AsO
 
4
]
 
2
 · 8-9H
 
2
O
8.CE.30IMA2005-053
(Zn,Cu,Co)Cu
 
4
[HAsO
 
4
|AsO
 
4
]
 
2
 · 9H
 
2
O
8.CE.30Pradetite
CoCu
 
4
(AsO
 
4
)
 
2
(AsO
 
3
OH)
 
2
·9H
 
2
O
8.CE.35Bobierrite
Mg
 
3
(PO
 
4
)
 
2
·8H
 
2
O
8.CE.40Annabergite
Ni
 
3
(AsO
 
4
)
 
2
·8H
 
2
O
8.CE.40Arupite
Ni
 
3
(PO
 
4
)
 
2
·8H
 
2
O
8.CE.40Barićite
(Mg,Fe)
 
3
(PO
 
4
)
 
2
·8H
 
2
O
8.CE.40Erythrite
Co
 
3
(AsO
 
4
)
 
2
·8H
 
2
O
8.CE.40Ferrisymplesite
Fe
3+
3
[(OH)
 
3
|(AsO
 
4
)
 
2
] · 5H
 
2
O
8.CE.40Hörnesite
Mg
 
3
(AsO
 
4
)
 
2
·8H
 
2
O
8.CE.40Köttigite
Zn
 
3
(AsO
 
4
)
 
2
·8H
 
2
O
8.CE.40Manganohörnesite
(Mn,Mg)
 
3
(AsO
 
4
)
 
2
·8H
 
2
O
8.CE.40Parasymplesite
Fe
2+
3
(AsO
 
4
)
 
2
·8H
 
2
O
8.CE.40Vivianite
Fe
2+
3
(PO
 
4
)
 
2
·8H
 
2
O
8.CE.40Pakhomovskyite
Co
 
3
[PO
 
4
]
 
2
 · 8H
 
2
O
8.CE.50Cattiite
Mg
 
3
(PO
 
4
)
 
2
·22H
 
2
O
8.CE.55Koninckite
Fe
3+
 
[PO
 
4
] · 3H
 
2
O
8.CE.60Kaňkite
FeAsO
 
4
·3.5H
 
2
O
8.CE.65Steigerite
AlVO
 
4
·3H
 
2
O
8.CE.70Metaschoderite
Al
 
2
PO
 
4
VO
 
4
·6H
 
2
O
8.CE.70Schoderite
Al
 
2
PO
 
4
VO
 
4
·8H
 
2
O
8.CE.75Mahlmoodite
8.CE.75Malhmoodite
FeZr(PO
 
4
)
 
2
·4H
 
2
O
8.CE.80Santabarbaraite
Fe
3+
3
[(OH)
 
3
|(PO
 
4
)
 
2
] · 5H
 
2
O
8.CE.85Metaköttigite
(Zn,Fe,Fe)
 
3
(AsO
 
4
)
 
2
·8(H
 
2
O,OH)
8.CE.85Metavivianite
Fe
2+
3-x
Fe
3+
x
(PO
 
4
)
 
2
(OH)x·(8-x)H
 
2
O
Related Minerals - Hey's Index Grouping:
20.9.1Angelellite
Fe
3+
4
[O
 
3
|(AsO
 
4
)
 
2
]
20.9.2Scorodite
Fe
3+
 
AsO
 
4
·2H
 
2
O
20.9.3Kaňkite
FeAsO
 
4
·3.5H
 
2
O
20.9.4Ferrisymplesite
Fe
3+
3
[(OH)
 
3
|(AsO
 
4
)
 
2
] · 5H
 
2
O
20.9.5Kaatialaite
Fe(H
 
2
AsO
 
4
)
 
3
·5H
 
2
O
20.9.7Parasymplesite
Fe
2+
3
(AsO
 
4
)
 
2
·8H
 
2
O
20.9.8Natropharmacosiderite
(Na,K)Fe
3+
4
[(OH)
 
4
|(AsO
 
4
)
 
3
] · 6-7H
 
2
O
20.9.9Pharmacosiderite
KFe
3+
4
[(OH)
 
4
|(AsO
 
4
)
 
3
] · 6-7H
 
2
O
20.9.10Kolfanite
Ca
 
2
Fe
3+
2
[O
 
2
|(AsO
 
4
)
 
3
] · 2H
 
2
O
20.9.11Arseniosiderite
Ca
 
2
Fe
3+
3
[O
 
2
|(AsO
 
4
)
 
3
] · 3H
 
2
O
20.9.12Yukonite
Ca
 
3
Fe
3+
 
[(OH)
 
3
|(AsO
 
4
)
 
2
] · 5H
 
2
O
20.9.13Dussertite
BaFe
3+
3
[(OH)
 
5
|(AsO
 
4
)
 
2
]
20.9.14Liskeardite
(Al,Fe
3+
 
)
 
3
[(OH)
 
6
|AsO
 
4
] · 5H
 
2
O
20.9.15Mapimite
Zn
 
2
Fe
3+
3
[(OH)
 
4
|(AsO
 
4
)
 
3
] · 10H
 
2
O
20.9.16Ogdensburgite
Ca
 
2
Fe
3+
4
(Zn,Mn
2+
 
)[(OH)
 
3
|(AsO
 
4
)
 
2
]
 
2
 · 6H
 
2
O
20.9.17Walentaite
H(Ca,Mn
2+
 
,Fe
2+
 
)Fe
3+
3
[(AsO
 
4
,PO
 
4
)]
 
4
 · 7H
 
2
O

Other Names for Symplesite

German names:
Symplesit
Russian names:
Симплезит
Spanish names:
Symplesita

Other Information

Other Information:Soluble in acids. Turns reddish brown in strong KOH solution or in 30% H2O2.
Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Symplesite

Reference List:Breithaupt, A. (1837), Bestimmung neuer Mineralien. 1. Symplesischer Diatom oder Symplesit. Journal für praktische Chemie, 10, 501-512.

Bořický (1868) Vh. min. Ges.: 3: 98.

Krenner (1886) Termés Füzetek: 10: 83, 108.

Krenner (1887) Zeitschrift für Kristallographie, Mineralogie und Petrographie, Leipzig: 13: 70.

Larsen, E.S. (1921) The Microscopic Determination of the Nonopaque Minerals, First edition, USGS Bulletin 679: 140.

Heide (1928) Zeitschrift für Kristallographie, Mineralogie und Petrographie, Leipzig: 67: 81.

Wolfe (1940) American Mineralogist: 25: 801.

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. John Wiley and Sons, Inc., New York, 7th edition, revised and enlarged, 1124 pp.: 752-753.

Acta Crystallographica: 3: 1-6.

Neues Jahrbuch für Mineralogie, Abhandlungen (1980): 138: 100.

Internet Links for Symplesite

Search Engines:
  • Look for Symplesite on Google
  • Look for Symplesite images on Google
    • External Links:
  • Look for Symplesite on Webmineral
  • Look for Symplesite on Athena Mineralogy
  • Look for Symplesite on Wikipedia
  • Look for Symplesite on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Search for Symplesite in the Natural History Museum (London) online catalogue
  • Symplesite details from Handbook of Mineralogy (PDF)
    • Mineral Dealers:
  • Wendel Minerals - Auktion & Shop
  • Fabre Minerals - search for Symplesite specimens
  • Rare and Unusual minerals at Mineralogical Research Company
  • The Arkenstone - Fine Minerals
  • Fine Minerals from Dan Weinrich Minerals
  • Mineral Classics - Worldwide Collector Quality Minerals and Gems
  • Search for Symplesite on minvision.com
  • Top quality minerals from Kristalle of California
  • High-end worldwide specimens & outstanding customer service
  • Lapis Mineral Magazin
  • rare and unusual minerals mainly crystallized
  • Wilensky Fine Minerals
    • Jobs:
  • Mining & Geology Jobs

    • Page Sponsor

    Sponsorship:This page is currently not sponsored. Click here to find out how you can sponsor this page.

    Localities for Symplesite

    Hide Locality List
    The 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.
    These maps work faster with Firefox!
    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    Australia
     
    • South Australia
      • Flinders Ranges
        • North Flinders Ranges
          • Wooltana homestead area
    • Tasmania
      • Huon district
        • Weld river
    		Bottrill & Baker (in prep) Catalogue of minerals of Tasmania
      • Waratah district
        • Magnet
    		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: 753.
    Austria
     
    • Carinthia
      • Friesach - Hüttenberg area
        • Hüttenberg
          • Hüttenberger Erzberg
    		H. Meixner: Der Karinthin 1:2-6 (1948)
            • Lölling District
    		H. Meixner: Der Karinthin 23:277-280 (1953)
    A. Brunlechner: Carinthia II 84:152-153 (1894)
          • Mosinzgraben
            • Schottenau
    		M. Puttner: Carinthia II 192./112.:255-260 (2002)
    Puttner, M. (1987): Mineralien von St. Martin am Silberberg (Kärnten) und Sekundärbildungen in Schlackenhohlräumen. – Carinthia II, Klagenfurt, 177./97.: 149-157.
    G. Niedermayr, I. Praetzel: Mineralien Kärntens, 1995
      • Gailtaler Alpen & Karnische Alpen Mts
        • Kirchbach
          • Kirchbachgraben
    		G. Niedermayr, I. Praetzel: Mineralien Kärntens, 1995
      • Hohe Tauern Mts
        • Malta valley
          • Kölnbrein peak - Lausnock Mt. area
    		Collection of NHM, Vienna
      • Saualpe Mts
        • Prebl
    		G. Niedermayr, I. Praetzel: Mineralien Kärntens, 1995
    • Styria
      • Birkfeld
        • Gasen
    		Postl, W. & Moser, B. (1987); Exel, R. (1993)
      • Schladming
        • Schladminger Tauern Mts
          • Obertalbach valley
    		A. Strasser: Die Minerale Salzburgs (1989)
    Canada
     
    • Yukon Territory
      • Whitehorse Mining District
        • Carcross
    		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: 753.
            • Windy Arm
    		Tyrrell & Graham (1913), Transactions of the Royal Society of Canada 7, sec. 4: 13-18; Traill (1983), Geol. Soc. of Canada Paper 80-18.
    Sabina (1992), Geol. Soc. of Canada Misc. Report 50: 41.
    Chile
     
    • Atacama Region
      • Copiapó Province
        • Tierra Amarilla
          • Pampa Larga district
    		maurizio dini collection - quantitative analysis
    Czech Republic
     
    • Bohemia (Böhmen; Boehmen)
      • Central Bohemia Region
        • Příbram
          • Třebsko
    		Kašpar, P., Řídkošil, T., Šrein, V.: Minerogeneze žíly T 1 z Třebska u Příbrami. Acta Universitatis Carolinae – Geologica, 1983, vol. 27, nos. 1-2, s. 61-96.
      • Karlovy Vary Region
        • Krušné Hory Mts (Erzgebirge)
          • Ostrov
    		Lapis 2002(7/8), 63-65
      • Plzeň Region
        • Nepomuk (Pomuk)
    		Litochleb, J.: Mineralogie zlatonosného zrudnění z dolu Jakub u Kasejovic (jz. Čechy). Bulletin mineralogicko-petrografického oddělení Národního muzea v Praze, 1998, roč. 6, s. 102-112.
      • South Bohemia Region
    		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: 753.
      • Ústí Region
        • Krušné Hory Mts (Erzgebirge)
    		Lapis 23(4), 18-34 (1998)
    • Moravia (Mähren; Maehren)
      • Olomouc Region
        • Javorník
    		Sejkora, J.: Uranové ložisko Zálesí v Rychlebských horách. Bulletin mineralogicko-petrografického oddělení Národního muzea v Praze, 1994, roč. 2, s. 105-110.
      • Vysočina Region
        • Žďár nad Sázavou
    		Staněk, J.: Parageneze minerálů pegmatitových žil z Hatí u Dolních Borů na západní Moravě. Acta Mus. Moraviae, Sci. nat., vol. 76, pages 19-49.
    France
     
    • Alsace
      • Haut-Rhin
        • Ste Marie-aux-Mines (Markirch)
    		Wittern, Journée: "Mineralien finden in den Vogesen", 1997
        • Thur valley (Thann valley)
          • Kruth
    		Kolitsch: Aufschluss 2/1997
    • Brittany
      • Finistère
        • Châteauneuf-du-Faou
    		Germain C., Saget Ph., Tissier J.P. (1990), Le Cahier des Micromonteurs, n°1, pp: 11-19
      • Morbihan
    		Le Règne Minéral, (Hors Série 7), 42-58
    • Limousin
      • Haute-Vienne
        • Nantiat
          • Vaulry
    		Queneau Patrice collection
    Germany
     
    • Baden-Württemberg
      • Black Forest
        • Schenkenzell
          • Wittichen
            • Böckelsbach valley
    		Walenta: "Die Mineralien des Schwarzwaldes", Weise (Munich), 1992
            • Burgfelsen
    		No reference listed
            • Heubach Valley
    		No reference listed
        • Wolfach
          • Oberwolfach
            • Rankach valley
    		Walenta, K. (1992): Die Mineralien des Schwarzwaldes. Chr. Weise Verlag, München, 336 pp. (in German)
    • Bavaria
      • Franconia
        • Fichtelgebirge
    		Weiss: "Mineralfundstellen, Deutschland West", Weise (Munich), 1990
      • Upper Palatinate
        • Oberpfälzer Wald
          • Waldmünchen
            • Althütte
    		S. Weiß: "Mineralfundstellen, Deutschland West", Weise (Munich), 1990
    • Saxony
      • Erzgebirge
    		Lapis 30(7/8):41-70 (2005)
    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: 753.
      • Vogtland
        • Klingenthal
          • Muldenberg
    		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: 753.
    • Thuringia
      • Bad Lobenstein
    		A. Breithaupt (1837): Bestimmung neuer Mineralien. 1. Symplesischer Diatom oder Symplesit.- Journal für praktische Chemie 10, 501-512; 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: 753.
      • Saalfeld
    		Wittern: "Mineralfundorte in Deutschland", 2001
    Greece
     
    • Attikí (Attica; Attika) Prefecture
      • Lavrion (Laurion; Laurium) District
        • Lavrion District Mines
          • Agios Konstantinos [St Constantine] (Kamareza; Kamariza)
            • Kamareza Mines
    		No reference listed
    No reference listed
        • Lavrion District slag localities
          • Thorikos area
    		No reference listed
    Italy
     
    • Lombardy
      • Varese Province
        • Ceresio Valley
    		Biffi P., Sbacchi M., Sinelli E., 2004. Gli arseniati di Cava del Prete e altre novità mineralogiche dal granofiro di Cuasso al Monte (Varese). Riv. Mineral. Ital., 28, 4: 232-239
    • Sardinia
      • Carbonia-Iglesias Province
        • Fluminimaggiore
    		Stara, P., Rizzo, R., Tanca, G.A. (1996): Iglesiente e Arburese. Miniere e Minerali. Edito a cura dell'EMSA e "varie associazioni mineralogiche", Volume 2°, 192 pp.
      • Medio Campidano Province
        • Arbus
    		AA. VV., 1996. Collezionare minerali. Hobby & Work.
    Stara, P., Rizzo, R., Tanca, G.A. (1996): Iglesiente e Arburese. Miniere e Minerali. Edito a cura dell'EMSA e "varie associazioni mineralogiche", Volume 2, 192 pp.
        • Gonnosfanadiga
          • Fenugu Sibiri Mine
    		Brizzi, G., Olmi, F., Sabelli, C. (1994): Gli arseniati di Pira Inferida, Gonnofanadiga (CA). Rivista Mineralogica Italiana, 3/1994, 193-206.
    AA. VV., 1996. Collezionare minerali. Hobby & Work.
    Stara, P., Rizzo, R., Tanca, G.A. (1996): Iglesiente e Arburese. Miniere e Minerali. Edito a cura dell'EMSA e "varie associazioni mineralogiche", Volume 2°, 239 pp.
    • Sicily
      • Messina Province
    		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: 753.
    Japan
     
    • Honshu Island
      • Chubu Region
        • Gifu Prefecture
          • Ena-gun
            • Hirukawa
              • Tohgane mine (Togane mine)
    		Matsubara et al (1992) Ganseki-Koubutsu-Koshogaku Zasshi, 87, 147-148.
    • Kyushu Island
      • Oita prefecture
    		Sturman (1976) Canadian Mineralogist, 14, 437-441.
    Mexico
     
    • Durango
      • Mun. de Mapimí
        • Mapimí
    		No reference listed
    Morocco
     
    • Souss-Massa-Draâ Region
      • Ouarzazate Province
        • Tazenakht
    		S. Weiß: Lapis 31(7/8), 72-73 (2006)
    Norway
     
    • Akershus
      • Rælingen
    		Kamphaug,E.(1986):"Geologien i området Blystadlia-Rælingen". NAGS-nytt 13(3), 4-13. (in norwegian); Neumann (1985, p. 125).
    Romania
     
    • Maramures Co.
    		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: 753.
    Russia
     
    • Northern Caucasus Region
      • Adygea (Adygeya) Republic
        • Belaya Rechka) deposit
    		Pavel M. Kartashov data
    UK
     
    • England
      • Cumbria
        • North and Western Region (Cumberland)
          • Bassenthwaite
    		[UKJMM 18:16]
          • Caldbeck Fells
    		No reference listed
          • Threlkeld District
            • St John's in the Vale
    		BMS Database
    USA
     
    • California
      • Santa Cruz Co.
        • Santa Cruz
    • Nevada
      • Eureka Co.
        • Lynn District
    		NBMG Spec. Pub. 31 Minerals of Nevada
      • Humboldt Co.
        • Potosi District
          • Adam Peak
    		NBMG Spec Pub 31 Minerals of Nevada
    • South Dakota
      • Custer Co.
        • Custer District
          • Custer
    		R&M 75:3 pp 156-169
    R&M 75:3 pp 156-169
          • Pringle
            • Cicero Peak
    		Rocks & Minerals: 75(3): 156-169.
    Mineral and/or Locality
    Google
     
    www.mindat.org Web
    Copyright © Jolyon & Ida Ralph 1993-2008. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them.Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. If you would like to add information to improve the quality of our database, then click here to register.