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Stichtite

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Robert Carl Sticht
Formula:
Mg6Cr3+2(OH)16[CO3] · 4H2O
Colour:
Rose-pink to purple
Lustre:
Waxy, Greasy, Pearly
Hardness:
1½ - 2
Specific Gravity:
2.16
Crystal System:
Trigonal
Name:
Named after Robert Carl Sticht (Oct. 8, 1856 Hoboken, Hudson County, New Jersey, USA - Apr. 30, 1922 Launceston, Tasmania, Australia), formerly General Manager of the Mount Lyell Mining and Railway Company, Queenstown (Tasmania).
Hydrotalcite Group.

See also the related, visually similar woodallite. It has a polymorph Stichtite-2H (previously known as barbertonite).

Visit gemdat.org for gemological information about Stichtite.


Hide all sections | Show all sections

Classification of StichtiteHide

Approved, 'Grandfathered' (first described prior to 1959)
5.DA.50

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

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

11 : Carbonates
11 : Carbonates of Cr and U

Physical Properties of StichtiteHide

Waxy, Greasy, Pearly
Transparency:
Transparent
Colour:
Rose-pink to purple
Streak:
White to light lilac
Hardness:
1½ - 2 on Mohs scale
Tenacity:
Flexible
Cleavage:
Perfect
{0001}
Density:
2.16 g/cm3 (Measured)    2.11 g/cm3 (Calculated)

Optical Data of StichtiteHide

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

Formula:
Mg6Cr3+2(OH)16[CO3] · 4H2O
IMA Formula:
Mg6Cr2CO3(OH)16 · 4H2O
Common Impurities:
Fe

Crystallography of StichtiteHide

Polytype:
Formula:
Crystal System:
Class (H-M)
Space Group:
Space Group Setting:
Cell Parameters:
Ratio:
Unit Cell Volume (calc):
Z:
Stichtite-2H
Mg6(Cr,Al)2(CO3)(OH)16 · 4H2O
Hexagonal 
 
 
 
a = 6.17 Å, c = 15.52 Å
a:c = 1 : 2.515
V 511.67 ų
(Calculated from Unit Cell)
1

X-Ray Powder DiffractionHide

Image Loading

Radiation - Copper Kα
Data Set:
Data courtesy of RRUFF project at University of Arizona, used with permission.

Type Occurrence of StichtiteHide

Place of Conservation of Type Material:
National School of Mines, Paris, France
Geological Setting of Type Material:
Serpentinites
Associated Minerals at Type Locality:

Synonyms of StichtiteHide

Other Language Names for StichtiteHide

German:Stichtit
Spanish:Stichtita

Varieties of StichtiteHide

Bouazzerite (of Cailleres)A local mining term used to describe a ferroan Stichtite.

Relationship of Stichtite to other SpeciesHide

Other Members of this group:
DesautelsiteMg6Mn3+2(OH)16[CO3] · 4H2OTrig. 3m (3 2/m)
DroninoiteNi6Fe2+3(OH)16Cl2 · 4H2OTrig. 3m (3 2/m) : R3m
HydrotalciteMg6Al2(OH)16[CO3] · 4H2OTrig. 3m (3 2/m) : R3m
IowaiteMg6Fe3+2(OH)16Cl2 · 4H2OTrig. 3m (3 2/m) : R3m
MeixneriteMg6Al2(OH)16(OH)2 · 4H2OTrig. 3m (3 2/m) : R3m
PyroauriteMg6Fe3+2(OH)16[CO3] · 4H2OTrig. 3m (3 2/m) : R3m
ReevesiteNi6Fe3+2(OH)16(CO3) · 4H2OTrig.
TakoviteNi6Al2(OH)16[CO3] · 4H2OTrig.
WoodalliteMg6Cr2(OH)16Cl2 · 4H2OTrig.

Common AssociatesHide

Associated Minerals Based on Photo Data:
Serpentine Subgroup14 photos of Stichtite associated with Serpentine Subgroup on mindat.org.
Chromite6 photos of Stichtite associated with Chromite on mindat.org.
Lizardite6 photos of Stichtite associated with Lizardite on mindat.org.
Calcite4 photos of Stichtite associated with Calcite on mindat.org.
Magnesiochromite3 photos of Stichtite associated with Magnesiochromite on mindat.org.
Pyroaurite2 photos of Stichtite associated with Pyroaurite on mindat.org.
Magnetite2 photos of Stichtite associated with Magnetite on mindat.org.
Stichtite-2H2 photos of Stichtite associated with Stichtite-2H on mindat.org.
Atlantisite2 photos of Stichtite associated with Atlantisite on mindat.org.
Chrysotile2 photos of Stichtite associated with Chrysotile on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

5.DA.AlexkhomyakoviteK6(Ca2Na)(CO3)5Cl·6H2OHex. 6/mmm (6/m 2/m 2/m) : P63/mcm
5.DA.05DypingiteMg5(CO3)4(OH)2 · 5H2OMon.
5.DA.05GiorgiositeMg5(CO3)4(OH)2 · 5-6H2O
5.DA.05HydromagnesiteMg5(CO3)4(OH)2 · 4H2OMon.
5.DA.05WidgiemoolthaliteNi5(CO3)4(OH)2 · 5H2OMon.
5.DA.05UM1986-10-CO:ClHMgMnZnMg5(Zn,Mn)3(CO3)2(OH,Cl)12 · H2O
5.DA.05UM1987-01-CO:HMgSMg4(CO3)2(OH)4 · 6H2O ?Mon.
5.DA.10ArtiniteMg2(CO3)(OH)2 · 3H2OMon.
5.DA.10IndigiriteMg2Al2(CO3)4(OH)2 · 15H2O
5.DA.10ChlorartiniteMg2(CO3)(OH)Cl · 2H2OTrig. 3m : R3c
5.DA.15OtwayiteNi2(CO3)(OH)2 · H2OOrth.
5.DA.15ZaratiteNi3(CO3)(OH)4 · 4H2O ?Iso.
5.DA.20KambaldaiteNaNi4(CO3)3(OH)3 · 3H2OHex.
5.DA.25CallaghaniteCu2Mg2(CO3)(OH)6 · 2H2OMon.
5.DA.30Claraite(Cu,Zn)15(CO3)4(AsO4)2(SO4)(OH)14·7H2OTric.
5.DA.35HydroscarbroiteAl14(CO3)3(OH)36 · nH2OTric.
5.DA.35ScarbroiteAl5(CO3)(OH)13 · 5H2OHex.
5.DA.40CaresiteFe2+4Al2(OH)12[CO3] · 3H2OTrig.
5.DA.40QuintiniteMg4Al2(OH)12[CO3] · 3H2OHex. 6 2 2 : P63 2 2
5.DA.40CharmariteMn2+4Al2(OH)12[CO3] · 3H2O
5.DA.45Stichtite-2HMg6(Cr,Al)2(CO3)(OH)16 · 4H2OHex.
5.DA.45BrugnatelliteMg6Fe3+(CO3)(OH)13 · 4H2OHex.
5.DA.45ChlormagaluminiteMg4Al2(OH)12Cl2 · 3H2OHex.
5.DA.45Hydrotalcite-2HMg6Al2(CO3)(OH)16 · 4H2OHex.
5.DA.45Pyroaurite-2HMg6Fe3+2(OH)16(CO3) · 4H2OHex. 6/mmm (6/m 2/m 2/m) : P63/mmc
5.DA.45ZaccagnaiteZn4Al2(OH)12[CO3] · 3H2OHex.
5.DA.50ComblainiteNi4Co2(OH)12[CO3] · 3H2OTrig.
5.DA.50DesautelsiteMg6Mn3+2(OH)16[CO3] · 4H2OTrig. 3m (3 2/m)
5.DA.50HydrotalciteMg6Al2(OH)16[CO3] · 4H2OTrig. 3m (3 2/m) : R3m
5.DA.50PyroauriteMg6Fe3+2(OH)16[CO3] · 4H2OTrig. 3m (3 2/m) : R3m
5.DA.50ReevesiteNi6Fe3+2(OH)16(CO3) · 4H2OTrig.
5.DA.50TakoviteNi6Al2(OH)16[CO3] · 4H2OTrig.
5.DA.50UM1998-10-CO:CoHNiCo6Fe2(CO3)(OH)16 · 4H2O ?
5.DA.55CoalingiteMg10Fe3+2(OH)24[CO3] · 2H2OTrig.

Related Minerals - Dana Grouping (8th Ed.)Hide

16b.6.2.1HydrotalciteMg6Al2(OH)16[CO3] · 4H2OTrig. 3m (3 2/m) : R3m
16b.6.2.3PyroauriteMg6Fe3+2(OH)16[CO3] · 4H2OTrig. 3m (3 2/m) : R3m
16b.6.2.4DesautelsiteMg6Mn3+2(OH)16[CO3] · 4H2OTrig. 3m (3 2/m)

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

11.11.2Rutherfordine(UO2)CO3Orth. mm2 : Imm2
11.11.3Joliotite(UO2)CO3 · nH2OOrth.
11.11.4GrimseliteK3Na(UO2)(CO3)3 · H2OHex.
11.11.5BayleyiteMg2(UO2)(CO3)3 · 18H2OMon.
11.11.6MetazelleriteCa(UO2)(CO3)2 · 3H2OOrth.
11.11.7ZelleriteCa(UO2)(CO3)2 · 5H2OOrth.
11.11.8WyartiteCaU5+(UO2)2(CO3)O4(OH) · 7H2OOrth.
11.11.9UrancalcariteCa(UO2)3(CO3)(OH)6 · 3H2OOrth.
11.11.10SharpiteCa(UO2)6(CO3)5(OH)4 · 6H2OOrth.
11.11.11VogliteCa2Cu(UO2)(CO3)4 · 6H2OMon.
11.11.12AndersoniteNa2Ca(UO2)(CO3)3 · 6H2OTrig. 3 : R3
11.11.13SwartziteMgCa(UO2)(CO3)3 · 12H2OMon. 2/m : P21/m
11.11.14RabbittiteCa3Mg3(UO2)2(CO3)6(OH)4 · 18H2OMon.
11.11.15Kamotoite-(Y)Y2(UO2)4(CO3)3O4 · 14H2OMon. 2/m
11.11.16Shabaite-(Nd)Ca(Nd,Sm,Y)2(UO2)(CO3)4(OH)2 · 6H2O
11.11.17Astrocyanite-(Ce)Cu2(Ce,Nd,La)2(UO2)(CO3)5(OH)2 · 1.5H2OHex.
11.11.18Bijvoetite-(Y)Y8(UO2)16(CO3)16O8(OH)8 · 39H2OMon.
11.11.19WidenmannitePb2(OH)2[(UO2)(CO3)2]Orth.
11.11.20ZnucaliteZn12Ca(UO2)(CO3)3(OH)22 · 4H2OOrth.

Other InformationHide

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

Stichtite in petrologyHide

An essential component of (items highlighted in red)

References for StichtiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Petterd W F (1910) Stichtite (carbonatohydrate of magnesium, chrome and iron). in Catalog of the Minerals of Tasmania 3rd Edition, J. Vail Hobart 167-169.
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.
Mills, S.J., Christy, A.G., Genin, J.-M.R., Kameda, T., Colombo, F. (2012): Nomenclature of the hydrotalcite supergroup: natural layered double hydroxides. Mineralogical Magazine, 76, 1289-1336.
Theiss, F.L., Ayoko, G.A., Frost, R.L. (2013): Stichtite: a review. Clay Minerals, 48, 143-148.

Internet Links for StichtiteHide

Localities for StichtiteHide

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.
Australia
 
  • Tasmania
    • West Coast municipality
      • 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; BOTTRILL, R. S., and BAKER, W. E. (2008) A Catalogue of the Minerals of Tasmania. Geological Survey Bulletin 73, Mineral Resources Tasmania. 254 pages.
Australian Journal of Mineralogy (2006) 12: 101-107; BOTTRILL, R. S., and BAKER, W. E. (2008) A Catalogue of the Minerals of Tasmania. Geological Survey Bulletin 73, Mineral Resources Tasmania. 254 pages.
Bottrill & Baker (in prep) Catalogue of minerals of Tasmania
        • North Dundas
[Stichtite-2H] R Bottrill, unpublished data
          • Serpentine Hill
Bottrill RS & Baker, WE (in prep) Catalogue of Minerals of Tasmania. Mineral Resources Tasmania
  • Western Australia
    • Wiluna Shire
      • Lake Way Station
Disseminated and Massive Nickel Sulphide Deposits,Honeymoon Well Complex, Western Australia; M Gole and M Woodhouse, Journal of the Virtual Explorer; ISSN 1441-8142 Vol 1 paper 2, 2000
Gole, M., Woodhouse, M.(2000), Disseminated and Massive Nickel Sulphide Deposits Honeymoon Well Complex Western Australia, (ed) Gordon Lister, Geological Research for the Exploration Industry, Journal of the Virtual Explorer, electronic edition, ISSN 1441-8142, Vol 1, Paper 2, 2000
Grguric, B.A., Seat, Z., Karpuzov, A.A., Simonov, O.N. (2013) The West Jordan deposit, a newly-discovered Type 2 dunite-hosted nickel sulphide system in the northern Agnew-Wiluna Belt, Western Australia. Ore Geology Reviews, Vol. 51, pg. 79-92
      • 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
      • Timmins area
Mandarino, J.A. (1966): Canadian Mineralogist 8, 668-669.
        • Porcupine Mining District
          • Deloro Township
Ann P.Sabina (2000), Rocks and Minerals for the Collector, Cobalt-Belleterre-Timmins, Ontario and Quebec. GSC Misc. Report 57
  • 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)
[Stichtite-2H] 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.
  • Odisha (Orissa)
    • Keonjhar District
Mondal, S.K., Baidya, TK, 1996. Stichtite, [Mg6Cr2(CO3)(OH)16.4H2O] in Nausahi ultramafites, Orissa, India - its transformation at elevated temperatures. Mineralogical Magazine. 60: 836-840
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
 
  • Drâa-Tafilalet Region
    • Ouarzazate Province
      • Tazenakht
Favreau, G., Dietrich, J. E., Meisser, N., Brugger, J., Ait Haddouch, L. & Maacha, L. (2007): Bou Azzer, Morocco. Mineralogical Record 38, 345-407
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
[Stichtite-2H] 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 Village (Sarany)
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
    • Ehlanzeni District
[Stichtite-2H] Am Min 26 (1941), 295
        • Kaapsche Hoop (Kaapsehoop)
[Stichtite-2H] Rocks & Min.: 21:275.
Ashwal, L.D. and Cairncross (1997). Mineralogy and origin of stichtite in chromite-serpentinites. Contributions to Mineralogy and Petrology, Vol. 127, 75-86. [www.johnbetts-fineminerals.com]
Minerals of South Africa
Minerals of South Africa
Minerals of South Africa
Minerals of South Africa
Swaziland
 
  • Hhohho District
    • Malolotja Nature Reserve
Ashwal, L.D., and Cairncross, B. (1997): Contributions to Mineralogy and Petrology 127, 75-86.
UK
 
  • Scotland
    • Shetland Islands
      • Mainland
        • Cunningsburgh
[Stichtite-2H] 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 District
      • Zvishavane (Shabani; Shabanie; 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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