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Stichtite

Big Photo

Roadcut stichtite occurrence, Kaapsche Hoop (Kaapsehoop), Barberton District, Mpumalanga Province, South Africa
© 2002 John H. Betts

Show Stichtite Photos (27)
Formula:
Mg
 
6
Cr
 
2
[(OH)
 
16
|CO
 
3
] · 4H
 
2
O
System:TrigonalColour:Rose-pink to purple
Lustre:Waxy, Greasy, PearlyHardness:1½ - 2
Name:Named after Robert Stich, General Manager of the Mount Lyell Mining and Railway Company, Dundas (Tasmania).


Hydrotalcite Group.

See also the related, visually similar woodallite and barbertonite.

Classification of Stichtite

IMA status:Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
Strunz 8th edition ID:5/E.03-20
Nickel-Strunz 10th (pending) edition ID:5.DA.50

5 : CARBONATES (NITRATES)
D : Carbonates with additional anions, with H2O
A : With medium-sized cations
Dana 8th edition ID:16b.6.2.2

16b : HYDRATED CARBONATES CONTAINING HYDROXYL OR HALOGEN
6 : AmBn(XO3)pZqxH2O & with (m+n):p = 8:1
Hey's CIM Ref.:11.11.1

11 : Carbonates
11 : Carbonates of Cr and U
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Type Occurrence of Stichtite

Type Locality:Stichtite Hill, Dundas mineral field, Zeehan District, Tasmania, Australia
Year of Discovery:1910
Geological Setting of type material:Serpentinites
Associated Minerals at type locality:
Chromite

Physical Properties of Stichtite

Lustre:Waxy, Greasy, Pearly
Diaphaneity (Transparency):Transparent
Colour:Rose-pink to purple
Streak:White to light lilac
Hardness (Mohs):1½ - 2
Cleavage:Perfect
{0001}
Density (measured):2.16 g/cm3
Density (calculated):2.11 g/cm3

Crystallography of Stichtite

Crystal System:Trigonal
Class (H-M):3 - Rhombohedral
Cell Parameters:a = 6.19Å, c = 46.47Å
Ratio:a:c = 1 : 7.507
Unit Cell Volume:V 1,542.00 ų (Calculated from Unit Cell)
Morphology:Massive. Matted or contorted aggregates of plates or fibers. Cross-fiber veinlets. Micaceous scales.
X-Ray Powder Diffraction:
Image Loading

Radiation - Copper Kα
Data Set:
Horizontal Axis: ° to ° Vertical Axis: % Source Data: Filtered Data: Peaks:
Data courtesy of RRUFF project at University of Arizona, used with permission.

Optical Data of Stichtite

Type:Uniaxial (+)
RI values: nω = 1.516 nε = 1.542
Maximum Birefringence:δ = 0.026

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Low
Pleochroism:Weak
Comments:O = dark rose-pink to lilac
E = light rose-pink to lilac

Chemical Properties of Stichtite

Formula:
Mg
 
6
Cr
 
2
[(OH)
 
16
|CO
 
3
] · 4H
 
2
O
Essential elements:C, Cr, H, Mg, O
All elements listed in formula:C, Cr, H, Mg, O
Common Impurities:Fe

Relationship of Stichtite to other Species

Member of Group:
Hydrotalcite Group:
Mg
 
6
R
3+
2
(OH)
 
16
CO
 
3
·4H
 
2
O, where R
3+
 
 = Al, Cr, or Fe
Related Minerals - Nickel-Strunz Grouping):

- +
5.DA.05Dypingite
Mg
 
5
[OH|(CO
 
3
)
 
2
]
 
2
 · 5H
 
2
O
5.DA.05Giorgiosite
Mg
 
5
[(CO
 
3
)
 
4
(OH)
 
2
] · 4H
 
2
O
5.DA.05Hydromagnesite
Mg
 
5
[(CO
 
3
)
 
4
(OH)
 
2
] · 4H
 
2
O
5.DA.05Widgiemoolthalite
Ni
 
5
[(CO
 
3
)
 
4
(OH)
 
2
] · 5H
 
2
O
5.DA.05UM1986-10-CO:ClHMgMnZn
Mg
 
5
(Zn,Mn)
 
3
(CO
 
3
)
 
2
(OH,Cl)
 
12
·H
 
2
O
5.DA.05UM1987-01-CO:HMgS
Mg
 
4
(CO
 
3
)
 
2
(OH)
 
2
·6H
 
2
O ?
5.DA.10Artinite
Mg
 
2
[(OH)
 
2
|CO
 
3
] · 3H
 
2
O
5.DA.10Indigirite
Mg
 
2
Al
 
2
[(CO
 
3
)
 
4
(OH)
 
2
] · 15H
 
2
O
5.DA.10Chlorartinite
[Mg
 
2
(CO
 
3
)(H
 
2
O)(OH)]Cl · H
 
2
O
5.DA.15Otwayite
Ni
 
2
CO
 
3
(OH)
 
2
·H
 
2
O
5.DA.15Zaratite
Ni
 
3
(CO
 
3
)(OH)
 
4
·4H
 
2
O
5.DA.20Kambaldaite
NaNi
 
4
(CO
 
3
)
 
3
(OH)
 
3
·3H
 
2
O
5.DA.25Callaghanite
Cu
 
2
Mg
 
2
[(OH)
 
6
|CO
 
3
] · 2H
 
2
O
5.DA.30Claraite
(Cu,Zn)
 
3
[(OH)
 
4
|CO
 
3
] · 4H
 
2
O
5.DA.35Hydroscarbroite
Al
 
14
(CO
 
3
)
 
3
(OH)
 
36
·nH
 
2
O
5.DA.35Scarbroite
Al
 
5
(OH)
 
13
CO
 
3
·5H
 
2
O
5.DA.40Caresite
Fe
2+
4
Al
 
2
[(OH)
 
12
|CO
 
3
] · 3H
 
2
O
5.DA.40Quintinite
Mg
 
4
Al
 
2
(OH)
 
12
CO
 
3
H
 
2
O
5.DA.40Charmarite
Mn
2+
4
Al
 
2
[(OH)
 
12
|CO
 
3
] · 3H
 
2
O
5.DA.45Barbertonite
Mg
 
6
(Cr,Al)
 
2
[(OH)
 
16
|CO
 
3
] · 4H
 
2
O
5.DA.45Brugnatellite
Mg
 
6
Fe
3+
 
[(OH)
 
13
|CO
 
3
] · 4H
 
2
O
5.DA.45Chlormagaluminite
(Mg,Fe
2+
 
)
 
4
Al
 
2
[(OH)
 
12
|(Cl
 
2
,CO
 
3
)] · 2H
 
2
O
5.DA.45Manasseite
Mg
 
6
Al
 
2
[(OH)
 
16
|CO
 
3
] · 4H
 
2
O
5.DA.45Sjögrenite
Mg
 
6
Fe
3+
2
[(OH)
 
16
|CO
 
3
] · 4H
 
2
O
5.DA.45Zaccagnaite
Zn
 
4
Al
 
2
(CO
 
3
)(OH)
 
12
·3H
 
2
O
5.DA.50Comblainite
(Ni
 
x
,Co
 
1-x
)(OH)
 
2
(CO
 
3
)
 
(1-x)/2
·nH
 
2
O
5.DA.50Desautelsite
Mg
 
6
Mn
3+
2
[(OH)
 
16
|CO
 
3
] · 4H
 
2
O
5.DA.50Hydrotalcite
Mg
 
6
Al
 
2
[(OH)
 
16
|CO
 
3
] · 4H
 
2
O
5.DA.50Pyroaurite
Mg
 
6
Fe
3+
2
[(OH)
 
16
|CO
 
3
] · 4H
 
2
O
5.DA.50Reevesite
Ni
 
6
Fe
3+
2
[(OH)
 
16
|CO
 
3
] · 4H
 
2
O
5.DA.50Takovite
Ni
 
6
Al
 
2
[(OH)
 
16
|CO
 
3
] · 4H
 
2
O
5.DA.50UM1998-10-CO:CoHNi
Co
 
6
Fe
 
2
CO
 
3
(OH)
 
16
·4H
 
2
O ?
5.DA.55Coalingite
Mg
 
10
Fe
3+
2
[(OH)
 
24
|CO
 
3
] · 2H
 
2
O
Related Minerals - Hey's Index Grouping:

- +
11.11.2Rutherfordine
(UO
 
2
)[CO
 
3
]
11.11.3Joliotite
(UO
 
2
)[CO
 
3
] · nH
 
2
O
11.11.4Grimselite
K
 
3
Na(UO
 
2
)[CO
 
3
]
 
3
 · H
 
2
O
11.11.5Bayleyite
Mg
 
2
(UO
 
2
)[CO
 
3
]
 
3
 · 18H
 
2
O
11.11.6Metazellerite
Ca(UO
 
2
)[CO
 
3
]
 
2
 · 3H
 
2
O
11.11.7Zellerite
Ca(UO
 
2
)[CO
 
3
]
 
2
 · 5H
 
2
O
11.11.8Wyartite
Ca[U
5+
 
(UO
 
2
)
 
2
(CO
 
3
)O
 
4
(OH)](H
 
2
O)
 
7
11.11.9Urancalcarite
Ca(UO
 
2
)
 
3
[(OH)
 
6
|CO
 
3
] · 3H
 
2
O
11.11.10Sharpite
Ca(UO
 
2
)
 
6
[(OH)
 
4
|(CO
 
3
)
 
5
] · 6H
 
2
O
11.11.11Voglite
Ca
 
2
Cu(UO
 
2
)[CO
 
3
]
 
4
 · 6H
 
2
O (?)
11.11.12Andersonite
Na
 
2
Ca(UO
 
2
)[CO
 
3
]
 
3
 · 6H
 
2
O
11.11.13Swartzite
MgCa(UO
 
2
)[CO
 
3
]
 
3
 · 12H
 
2
O
11.11.14Rabbittite
Ca
 
3
Mg
 
3
(UO
 
2
)
 
2
[(OH)
 
4
|(CO
 
3
)
 
6
] · 18H
 
2
O
11.11.15Kamotoite-(Y)
Y
 
2
(UO
 
2
)
 
4
[O
 
4
|(CO
 
3
)
 
3
] · 14H
 
2
O
11.11.16Shabaite-(Nd)
Ca(Nd,Sm,Y)
 
2
(UO
 
2
)[(OH)
 
2
|(CO
 
3
)
 
4
] · 6H
 
2
O
11.11.17Astrocyanite-(Ce)
Cu
 
2
(Ce,Nd,La)
 
2
(UO
 
2
)[(OH)
 
2
|(CO
 
3
)
 
5
] · 1.5H
 
2
O
11.11.18Bijvoetite-(Y)
(Y,Dy)
 
2
(UO
 
2
)
 
4
[(OH)
 
6
|(CO
 
3
)
 
4
] · 11H
 
2
O
11.11.19Widenmannite
Pb
 
2
(UO
 
2
)[CO
 
3
]
 
3
11.11.20Znucalite
Zn
 
12
Ca(UO
 
2
)[(OH)
 
22
|(CO
 
3
)
 
3
] · 4H
 
2
O

Other Names for Stichtite

Synonyms:
Chrom-Brugnatellite
Other Languages:
German:Stichtit
Spanish:Stichtita
Varieties:
Bouazzerite (of Cailleres)

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.

References for Stichtite

Reference List:Petterd (1910), Catal. Minerals of Tasmania, 3rd ed., p. 167.

Poitevin and Graham (1918), Geological Survey of Canada, Museum Bulletin: 27: 29.

Foshag (1920), Proceedings of the U.S. National Museum: 58: 145-153.

Frondel, C. (1941), American Mineralogist: 26: 295.

Palache, Charles, Harry Berman & Clifford Frondel (1944), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana Yale University 1837-1892, Volume I: Elements, Sulfides, Sulfosalts, Oxides. John Wiley and Sons, Inc., New York. 7th edition, revised and enlarged: 655-656.

Clays and Clay Minerals: 41(5): 558-564.

Tatarinov, A.V., Sapozhnikov, A.N., Prokudin, S.G., and Frolova, L.P. (1985): Stichtite in serpentinites of the Terektinsky Ridge (Altay). Zapiski Vserossiyskogo Mineralogicheskogo Obshchestva, 114, 575-581.

Ashwal, L.D., and Cairncross, B. (1997): Mineralogy and origin of stichtite in chromite-bearing serpentinites. Contributions to Mineralogy and Petrology 127, 75-86.

Internet Links for Stichtite

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  • Look for Stichtite on Wikipedia
  • Look for Stichtite on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Search for Stichtite in the Natural History Museum (London) online catalogue
  • Stichtite details from Handbook of Mineralogy (PDF)
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    Localities for Stichtite

    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.
    (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
     
    • Tasmania
      • Macquarie Harbour
        • Birches Inlet
    		Australian Journal of Mineralogy (2006) 12: 101-107
      • Zeehan District
        • Dundas mineral field
    		Anthony, J. W. et al. (1997): Handbook of Mineralogy, Vol. 3, 39
    Australian Journal of Mineralogy (2006) 12: 93-99
    Bottrill & Baker (in prep) Catalogue of minerals of Tasmania
    Australian Journal of Mineralogy (2006) 12: 101-107
    Bottrill & Baker (in prep) Catalogue of minerals of Tasmania
        • North Dundas
    		R Bottrill, unpublished data
          • Serpentine Hill
    		Bottrill RS & Baker, WE (in prep) Catalogue of Minerals of Tasmania. Mineral Resources Tasmania
    • Western Australia
      • Wiluna Shire
        • Mount Keith
    		Nickel Mineralisation in Western Australia by R.J. Marston 1984.
    Brazil
     
    • Northeast Region
      • Bahia
    		Boukili, H., Novikoff, A., Besnus, Y., Soubies, F., and Queiroz, C. (1983): Sciences Géologiques 72, 19-28.
    Canada
     
    • Ontario
      • Cochrane District
    		Mandarino, J.A. (1966): Canadian Mineralogist 8, 668-669.
    • Québec
      • Abitibi-Témiscamingue
        • Abitibi RCM
          • La Motte
    		Sabina (2003)126
              • Marbridge No. 1 mine
    		Mineral Record (1976) 7:4 pp174-178
      • Mégantic Co.
        • Coleraine Township
    		Dana 7:I:656.
    Czech Republic
     
    • Moravia (Mähren; Maehren)
      • South Moravia Region
        • Letovice (Lettowitz)
    		Ulrych, J.: Stichtit z hadcového tělesa od Slatinky u Letovic. Časopis pro mineralogii a geologii, 1966, roč. 11, č. 3, s. 311-315.
    India
     
    • Karnataka
      • Mysore
    		Varadarajan, S. (1966): Proc. Indian Sci. Congr., 53rd Session, Chandigarh, Part 3, p. 183.
    Israel
     
    • Negev desert
    		Vapnik, Y., Sokol, E., Murashko M., Sharygin V. (2006): The enigma of Hatrurim. Mineralogical Almanac, 10, 69-77.
    Kazakhstan
    Moskaleva, V.N., and Ivanova, V.P. (1968): Zap. Vses. Mineral. Obshch. 97(2), 172-184.
    Moskaleva, V.N., and Ivanova, V.P. (1968): Zap. Vses. Mineral. Obshch. 97(2), 172-184.
    Mexico
     
    • Puebla
    		1.Proenza, J.; Ortega-Gutierrez, F.; Camprubí, A.; Tritlla, J.; Elias-Herrera, M. and Reyes-Salas, M. (2004) "The Paleozoic serpentinite-enclosed chromitites from Tehuitzingo (Acatlan Complex, SW Mexico): a petrological, mineralogical, and PGE-distribution study". Journal of South American Earth Sciences , 16,. 649-666.
    Morocco
     
    • Souss-Massa-Draâ Region
      • Ouarzazate Province
        • Tazenakht
          • Bou Azzer District
    		Favreau, G. and Dietrich, J. E. (2006). Die Mineralien von Bou Azzer. Lapis 31(7/8), 27-68
            • Agoudal
    		Favreau, G. and Dietrich, J. E. (2006). Die Mineralien von Bou Azzer. Lapis 31(7/8), 27-68
    Favreau, G. and Dietrich, J. E. (2006). Die Mineralien von Bou Azzer. Lapis 31(7/8), 27-68
    Favreau, G. and Dietrich, J. E. (2006). Die Mineralien von Bou Azzer. Lapis 31(7/8), 27-68
            • Bou Azzer
    		Favreau, G. and Dietrich, J. E. (2006). Die Mineralien von Bou Azzer. Lapis 31(7/8), 27-68
    New Zealand
     
    • North Island
      • Manawatu-Wanganui
        • Tararua
          • Maharahara
    		Railton, G.L. & Watters, W.A. (1990): Minerals of New Zealand
    • South Island
      • Southland
        • Greenhills
    		D. Coombs in Micro-Scope, August 1992
    Russia
     
    • Urals Region
      • Middle Urals
        • Permskaya Oblast'
          • Gorozavodskii area
            • Saranovskaya (Sarany) Village
    		P.M. Kartashov data
    • Western-Siberian Region
      • Altai Republic (Gorno-Altayskaya Autonomous Oblast')
    		Tatarinov, A.V., Sapozhnikov, A.N., Prokudin, S., and Frolova, L.P. (1985): Zap. Vses. Mineral. Obshch. 114(5), 575-581.
        • Ust'-Koksa district
    		Pavel M. Kartashov data
    South Africa
     
    • Limpopo Province
      • Murchison Range
        • Gravelotte
    		Minerals of South Africa
    Minerals of South Africa
    • Mpumalanga Province
      • Barberton District
        • Kaapsche Hoop (Kaapsehoop)
    		Hall, A.L. (1922): On a new occurrence of stichtite from the Barberton district. Transactions of the Geological Society of South Africa 24, 182-187.
    [www.johnbetts-fineminerals.com]
    Minerals of South Africa
    Minerals of South Africa
    Minerals of South Africa
    Minerals of South Africa
    Swaziland
     
    • Hhohho District
    		Ashwal, L.D., and Cairncross, B. (1997): Contributions to Mineralogy and Petrology 127, 75-86.
    UK
     
    • Scotland
      • Shetland Islands
        • Cunningsburgh
    		Anthony, J. W. et al. (1997): Handbook of Mineralogy, Vol. 3, 39
    USA
     
    • New York
      • New York City
        • Staten Island (Richmond Co.)
    		Collected by Steve Okulewicz
    Zimbabwe
     
    • Midlands
      • Zvishavane (Shabani; Shavani)
    		Laubscher, D.H. (1986): Chrysotile asbestos in the Zvishavane (Shabani) and Mashava (Mashaba) areas, Zimbabwe. In: Anhaeusser C.R., and Maske, S. (eds.): Mineral deposits of southern Africa. Geol. Soc. S. Afr., Johannesburg, pp. 377-393.
    Mineral and/or Locality
    Google
     
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