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Stichtite

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Big Photo

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

Show Stichtite Photos (46)



Formula:
Mg
 
6
Cr
 
2
(CO
 
3
)(OH)
 
16
 · 4H
 
2
O
System:TrigonalColour:Rose-pink to purple
Lustre:Waxy, Greasy, PearlyHardness:1½ - 2
Member of:Hydrotalcite Group
Name:Named after Robert Carl Sticht (1856-1922), formerly 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:
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
(CO
 
3
)(OH)
 
16
 · 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:Hydrotalcite Group
Other Members of Group:

- +
Desautelsite
Mg
 
6
Mn
3+
2
(CO
 
3
)(OH)
 
16
 · 4H
 
2
O
Hydrotalcite
Mg
 
6
Al
 
2
(CO
 
3
)(OH)
 
16
 · 4H
 
2
O
Hydrowoodwardite
(Cu,Al)
 
9
(SO
 
4
)
 
2
(OH)
 
18
 · nH
 
2
O
Iowaite
Mg
 
6
Fe
3+
2
(OH)
 
16
Cl
 
2
 · 4H
 
2
O
Pyroaurite
Mg
 
6
Fe
3+
2
(CO
 
3
)(OH)
 
16
 · 4H
 
2
O
Takovite
Ni
 
6
Al
 
2
(CO
 
3
)(OH)
 
16
 · 4H
 
2
O
Wermlandite
Mg
 
7
(Ca,Mg)(Al,Fe)
 
2
(SO
 
4
)
 
2
(OH)
 
18
 · 12H
 
2
O
Woodwardite
Cu
 
4
Al
 
2
(SO
 
4
)(OH)
 
12
 · 2-4H
 
2
O
Zincowoodwardite
Zn
 
1-x
Al
 
x
(SO
 
4
)
 
x/2
(OH)
 
2
 · nH
 
2
O (x=0.32-0.50)
Related Minerals - Nickel-Strunz Grouping):

- +
5.DA.05Dypingite
Mg
 
5
(CO
 
3
)
 
4
(OH)
 
2
 · 5H
 
2
O
5.DA.05Giorgiosite
Mg
 
5
(CO
 
3
)
 
4
(OH)
 
2
 · 5-6H
 
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
(CO
 
3
)(OH)
 
2
 · 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
)(OH)Cl · 2H
 
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
(CO
 
3
)(OH)
 
6
 · 2H
 
2
O
5.DA.30Claraite
(Cu,Zn)
 
3
(CO
 
3
)(OH)
 
4
 · 4H
 
2
O
5.DA.35Hydroscarbroite
Al
 
14
(CO
 
3
)
 
3
(OH)
 
36
 · nH
 
2
O
5.DA.35Scarbroite
Al
 
5
(CO
 
3
)(OH)
 
13
 · 5H
 
2
O
5.DA.40Caresite
Fe
2+
4
Al
 
2
(CO
 
3
)(OH)
 
12
 · 3H
 
2
O
5.DA.40Quintinite
Mg
 
4
Al
 
2
(CO
 
3
)(OH)
 
12
 · H
 
2
O
5.DA.40Charmarite
Mn
2+
4
Al
 
2
(CO
 
3
)(OH)
 
12
 · 3H
 
2
O
5.DA.45Barbertonite
Mg
 
6
(Cr,Al)
 
2
(CO
 
3
)(OH)
 
16
 · 4H
 
2
O
5.DA.45Brugnatellite
Mg
 
6
Fe
3+
 
(CO
 
3
)(OH)
 
13
 · 4H
 
2
O
5.DA.45Chlormagaluminite
(Mg,Fe
2+
 
)
 
4
Al
 
2
(Cl
 
2
,CO
 
3
)(OH)
 
12
 · 2H
 
2
O
5.DA.45Manasseite
Mg
 
6
Al
 
2
(CO
 
3
)(OH)
 
16
 · 4H
 
2
O
5.DA.45Sjögrenite
Mg
 
6
Fe
3+
2
(CO
 
3
)(OH)
 
16
 · 4H
 
2
O
5.DA.45Zaccagnaite
Zn
 
4
Al
 
2
(CO
 
3
)(OH)
 
12
 · 3H
 
2
O
5.DA.50Comblainite
Ni
 
6
Co
 
2
(CO
 
3
)(OH)
 
16
 · 4H
 
2
O
5.DA.50Desautelsite
Mg
 
6
Mn
3+
2
(CO
 
3
)(OH)
 
16
 · 4H
 
2
O
5.DA.50Hydrotalcite
Mg
 
6
Al
 
2
(CO
 
3
)(OH)
 
16
 · 4H
 
2
O
5.DA.50Pyroaurite
Mg
 
6
Fe
3+
2
(CO
 
3
)(OH)
 
16
 · 4H
 
2
O
5.DA.50Reevesite
Ni
 
6
Fe
3+
2
(CO
 
3
)(OH)
 
16
 · 4H
 
2
O
5.DA.50Takovite
Ni
 
6
Al
 
2
(CO
 
3
)(OH)
 
16
 · 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
(CO
 
3
)(OH)
 
24
 · 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
CaU
5+
 
(UO
 
2
)
 
2
(CO
 
3
)O
 
4
(OH) · 7H
 
2
O
11.11.9Urancalcarite
Ca(UO
 
2
)
 
3
(CO
 
3
)(OH)
 
6
 · 3H
 
2
O
11.11.10Sharpite
Ca(UO
 
2
)
 
6
(CO
 
3
)
 
5
(OH)
 
4
 · 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
(CO
 
3
)
 
6
(OH)
 
4
 · 18H
 
2
O
11.11.15Kamotoite-(Y)
Y
 
2
(UO
 
2
)
 
4
(CO
 
3
)
 
3
O
 
4
 · 14H
 
2
O
11.11.16Shabaite-(Nd)
Ca(Nd,Sm,Y)
 
2
(UO
 
2
)(CO
 
3
)
 
4
(OH)
 
2
 · 6H
 
2
O
11.11.17Astrocyanite-(Ce)
Cu
 
2
(Ce,Nd,La)
 
2
(UO
 
2
)(CO
 
3
)
 
5
(OH)
 
2
 · 1.5H
 
2
O
11.11.18Bijvoetite-(Y)
(Y,Dy)
 
2
(UO
 
2
)
 
4
(CO
 
3
)
 
4
(OH)
 
6
 · 11H
 
2
O
11.11.19Widenmannite
Pb
 
2
(UO
 
2
)(CO
 
3
)
 
3
11.11.20Znucalite
Zn
 
12
Ca(UO
 
2
)(CO
 
3
)
 
3
(OH)
 
22
 · 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.

Mills, S. J., Whitfield, P. S., Wilson, S. A., Woodhouse, J. A., Dipple, G. M., Raudsepp, M. & Francis, C. A. (2011) The crystal structure of stitchtite, re-examination of barbertonite and the nature of polytypism in MgCr hydrotalcites. American Mineralogist, 96(1), 179–187.

Internet Links for Stichtite

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  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Stichtite details from Handbook of Mineralogy (PDF)
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    • Localities for Stichtite

    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.
    Hide Locality List
    (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.
    Austria
     
    • Styria
      • Frohnleiten
        • Kirchdorf
    		Kolitsch, U. & Brandstätter, F. (2010): 1666) Ein vorläufiger Bericht über seltene Ni- und Cr-Mineralien vom Kirchdorftunnel der Brucker Schnellstraße, Steiermark. Pp. 250-252 in Niedermayr et al. (2010): Neue Mineralfunde aus Österreich LIX. Carinthia II, 200./120., 199-260.
    Brazil
     
    • Bahia
    		Boukili, H., Novikoff, A., Besnus, Y., Soubies, F., and Queiroz, C. (1983): Sciences Géologiques 72, 19-28.; F. Zaccarini, G. Garuti and R.F. Martin (2006): Exotic accessory minerals in layered chromitites of the Campo Formoso complex (Brazil). Geologica Acta 4, 461-469. [http://www.geologica-acta.com/pdf/vol0404a04.pdf]
    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
      • Chaudière-Appalaches
        • Les Appalaches RCM
          • Saint-Joseph-de-Coleraine
    		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 District
    		Varadarajan, S. (1966): Proc. Indian Sci. Congr., 53rd Session, Chandigarh, Part 3, p. 183.
    Israel
     
    • Negev
    		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.
    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 Azer District (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 Azer
    		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'
          • Gornozavodskii 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
        • Mainland
          • 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
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