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Stichtite

A valid IMA mineral species - grandfathered
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About StichtiteHide

08505600014946383404837.jpg
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).




Unique IdentifiersHide

Mindat ID:
3784
Long-form identifier:
mindat:1:1:3784:2
GUID
(UUID V4):
3a775569-3c01-4946-a2cd-e76e9f5a0c11

IMA Classification of StichtiteHide

Approved, 'Grandfathered' (first described prior to 1959)
IMA Formula:
Mg6Cr2(CO3)(OH)16 · 4H2O
First published:
1910

Classification of StichtiteHide

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

Mineral SymbolsHide

As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

Please only use the official IMA–CNMNC symbol. Older variants are listed for historical use only.

SymbolSourceReference
SttIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43
SttWarr (2020)Warr, L.N. (2020) Recommended abbreviations for the names of clay minerals and associated phases. Clay Minerals, 55, 261–264 doi:10.1180/clm.2020.30

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

Chemistry of StichtiteHide

Mindat Formula:
Mg6Cr3+2(OH)16[CO3] · 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-2HStichtite-3R
Mg6(Cr,Al)2(CO3)(OH)16 · 4H2O 
Hexagonal Trigonal 
6/mmm (6/m 2/m 2/m) - Dihexagonal Dipyramidal3m (3 2/m) - Hexagonal Scalenohedral
P63/mmc R3m
 R3m
a = 6.09689(6) Å, c = 15.6193(8) Å
a = 3.09573(3) Å, c = 23.5069(6) Å
a:c = 1 : 2.562a:c = 1 : 7.593
V 502.82 ų
(Calculated from Unit Cell)
V 195.099 ų
  

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:
d-spacingIntensity
7.8 Å(100)
3.91 Å(90)
2.60 Å(40)
2.32 Å(30)
1.97 Å(30)
1.54 Å(20)
1.51 Å(20)

Geological EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest Age (Ga)
Stage 3b: Earth’s earliest hydrosphere>4.45
13 : Hadean serpentinization

Type Occurrence of StichtiteHide

General Appearance of Type Material:
Irregularly-shaped masses veins and blebs in serpentine.
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)
DroninoiteNi6Fe3+2(OH)16Cl2 · 4H2OTrig. 3m (3 2/m) : R3m
HydrotalciteMg6Al2(CO3)(OH)16 · 4H2OTrig. 3m (3 2/m) : R3m
Hydrotalcite-3RMg6Al2(CO3)(OH)16 · 4H2OTrig. 3m (3 2/m) : R3m
IowaiteMg6Fe3+2(OH)16Cl2 · 4H2OTrig. 3m (3 2/m) : R3m
KaznakhtiteNi6Co3+2(CO3)(OH)16 · 4H2OTrig. 3 : R3
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. 3m (3 2/m) : R3m
TakoviteNi6Al2(OH)16[CO3] · 4H2OTrig. 3m (3 2/m) : R3m
UM2002-02-COH:FeNi(Fe2+,Ni)6Fe3+2(CO3)(OH)16 · 4H2O
WoodalliteMg6Cr2(OH)16Cl2 · 4H2OTrig. 3m (3 2/m) : R3m

Common AssociatesHide

Associated Minerals Based on Photo Data:
36 photos of Stichtite associated with Serpentine SubgroupD3[Si2O5](OH)4
15 photos of Stichtite associated with ChromiteFe2+Cr3+2O4
10 photos of Stichtite associated with LizarditeMg3(Si2O5)(OH)4
9 photos of Stichtite associated with Serpentinite
8 photos of Stichtite associated with ChrysotileMg3(Si2O5)(OH)4
5 photos of Stichtite associated with MagnesiochromiteMgCr2O4
4 photos of Stichtite associated with CalciteCaCO3
4 photos of Stichtite associated with MagnetiteFe2+Fe3+2O4
4 photos of Stichtite associated with Stichtite-2HMg6(Cr,Al)2(CO3)(OH)16 · 4H2O
4 photos of Stichtite associated with AragoniteCaCO3

Related Minerals - Strunz-mindat GroupingHide

5.DA.AlexkhomyakoviteK6(Ca2Na)(CO3)5Cl · 6H2OHex. 6/mmm (6/m 2/m 2/m) : P63/mcm
5.DA.AmoraiteCa12Al6(OH)36(CO3)2(SO3) · 15H2O Tric. 1 : P1
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. 2/m : P21/b
5.DA.05WidgiemoolthaliteNi5(CO3)4(OH)2 · 5H2OMon. 2/m : P21/b
5.DA.05UM1986-10-CO:ClHMgMnZn (also called Mineral F, Dunn, 1995)Mg5(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. 2/m : B2/m
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. 6 : P63
5.DA.25CallaghaniteCu2Mg2(CO3)(OH)6 · 2H2OMon. 2/m : B2/b
5.DA.30Claraite(Cu,Zn)15(CO3)4(AsO4)2(SO4)(OH)14 · 7H2OTric. 1 : P1
5.DA.35HydroscarbroiteAl14(CO3)3(OH)36 · nH2OTric.
5.DA.35ScarbroiteAl5(CO3)(OH)13 · 5H2OTric.
5.DA.40CaresiteFe2+4Al2(OH)12[CO3] · 3H2OTrig. 3 2 : P31 1 2
5.DA.40QuintiniteMg4Al2(OH)12(CO3) · 3H2OHex. 6 2 2 : P63 2 2
5.DA.40CharmariteMn2+4Al2(OH)12[CO3] · 3H2OHex.
5.DA.40KarchevskyiteMg18Al9(OH)54Sr2(CO3)9(H2O)6 (H3O)5Trig.
5.DA.40UM1987-05-OH:AlCMgMg4Al2(OH)12(CO3,SO4) · 3H2O
5.DA.45Stichtite-2HMg6(Cr,Al)2(CO3)(OH)16 · 4H2OHex. 6/mmm (6/m 2/m 2/m) : P63/mmc
5.DA.45BrugnatelliteMg6Fe3+(CO3)(OH)13 · 4H2OHex.
5.DA.45ChlormagaluminiteMg4Al2(OH)12Cl2 · 3H2OHex. 6/mmm (6/m 2/m 2/m) : P63/mcm
5.DA.45Hydrotalcite-2HMg6Al2(CO3)(OH)16 · 4H2OHex. 6/mmm (6/m 2/m 2/m) : P63/mmc
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.45LiudongshengiteZn4Cr2(OH)12(CO3) · 3H2OTrig. 3m (3 2/m) : R3m
5.DA.50ComblainiteNi4Co2(OH)12[CO3] · 3H2OTrig.
5.DA.50DesautelsiteMg6Mn3+2(OH)16[CO3] · 4H2OTrig. 3m (3 2/m)
5.DA.50HydrotalciteMg6Al2(CO3)(OH)16 · 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. 3m (3 2/m) : R3m
5.DA.50TakoviteNi6Al2(OH)16[CO3] · 4H2OTrig. 3m (3 2/m) : R3m
5.DA.50KaznakhtiteNi6Co3+2(CO3)(OH)16 · 4H2OTrig. 3 : R3
5.DA.55CoalingiteMg10Fe3+2(OH)24[CO3] · 2H2OTrig. 3m (3 2/m) : R3m
5.DA.55Akopovaite Al4Li2(OH)12(CO3)(H2O)3Mon. 2/m : B2/m
5.DA.60ŠlikiteZn2Mg(CO3)2(OH)2 · 4H2OTric. 1 : P1
5.DA.65MarkliteCu5(CO3)2(OH)6 · 6H2OMon. 2/m : P21/b

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 rock names highlighted in red, an accessory component in rock names highlighted in green.

Internet Links for StichtiteHide

References for StichtiteHide

Reference List:

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 references and 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 (e.g. 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)
      • Zeehan mining district
        • Dundas mineral field
Anthony (1997)
Australian Journal of Mineralogy (2006)
Bottrill et al. (2008) +1 other reference
Australian Journal of Mineralogy (2006) +1 other reference
Bottrill et al. (2008)
        • North Dundas
[Stichtite-2H] R Bottrill
          • Serpentine Hill
Bottrill et al. (2008)
  • Western Australia
    • Wiluna Shire
      • Lake Way Station
Disseminated and Massive Nickel ... +2 other references
Gole et al. (2000)
Grguric et al. (2013)
Wilson et al. (2014)
Nickel Mineralisation in Western ...
Austria
 
  • Styria
    • Bruck-Mürzzuschlag District
      • Pernegg an der Mur
        • Kirchdorf
Kolitsch et al. (2010)
Brazil
 
  • Bahia
Boukili et al. (1983) +1 other reference
  • Minas Gerais
King (n.d.)
Canada
 
  • Ontario
    • Cochrane District
      • Timmins
        • Deloro Township
Sabina (2000)
Mandarino (1966)
  • Québec
    • Abitibi-Témiscamingue
      • Abitibi RCM
        • La Motte
Sabina (2003)
            • Marbridge No. 1 mine
Mineral Record (1976)
    • Chaudière-Appalaches
      • Les Appalaches RCM
        • Saint-Joseph-de-Coleraine
Dana 7:I:656.
Czech Republic
 
  • South Moravian Region
    • Blansko District
      • Letovice
[Stichtite-2H] Ulrych
Eswatini
 
  • Hhohho Region
    • Malolotja Nature Reserve
Ashwal et al. (1997)
India
 
  • Karnataka
    • Hassan District
Varadarajan (1966)
  • Odisha
    • Keonjhar District
Mondal et al. (1996)
Kazakhstan
 
Mexico
 
  • Puebla
1.Proenza +3 other references
Ortega-Gutierrez +2 other references
Middle East
 
Vapnik et al. (2006)
Morocco
 
  • Drâa-Tafilalet Region
Favreau et al. (2007)
    • Zagora Province
      • Agdz Cercle
        • Tansifte Caïdat
Favreau et al. (2006)
Favreau et al. (2006)
Favreau et al. (2006)
Favreau et al. (2006)
Favreau et al. (2006)
New Zealand
 
  • Manawatu-Whanganui Region
    • Tararua District
      • Maharahara
[Stichtite-2H] Railton et al. (1990)
  • Southland Region
    • Invercargill City
      • Greenhills
D. Coombs in Micro-Scope
Russia
 
  • Altai Republic
Tatarinov et al. (1985)
    • Ust-Koksinsky District
      • Terekta Ridge
Zhitova et al. (2020)
Pavel.M. Kartashov (n.d.)
Pavel M. Kartashov analytical data 2021
  • Perm Krai
    • Gornozavodskii District
      • Sarany
Pavel.M. Kartashov (n.d.)
South Africa
 
  • Limpopo
    • Capricorn District Municipality
      • Blouberg Local Municipality
        • Waterberg project
McCreesh et al. (2018)
    • Mopani District Municipality
      • Ba-Phalaborwa Local Municipality
        • Murchison Range
          • Gravelotte
Cairncross et al. (1995)
Cairncross et al. (1995)
  • Mpumalanga
    • Ehlanzeni District Municipality
      • Mbombela Local Municipality
[Stichtite-2H] Am Min 26 (1941)
Cairncross et al. (1995)
[Stichtite-2H] www.johnbetts-fineminerals.com (2021) +2 other references
[Stichtite-2H] Rocks & Min.: 21:275.
Ashwal et al. (1997) +1 other reference
PMPB Meulenbeld collection photo ID ...
    • Gert Sibande District Municipality
      • Chief Albert Luthuli Local Municipality
Cairncross et al. (1995)
Cairncross et al. (1995)
Cairncross et al. (1995)
UK
 
  • Scotland
    • Shetland Islands
      • Mainland
        • Cunningsburgh
[Stichtite-2H] Anthony (1997)
USA
 
  • New York
    • New York City
      • Staten Island (Richmond County)
Collected by Steve Okulewicz
Zimbabwe
 
  • Midlands
    • Zvishavane District
      • Zvishavane (Shabani; Shabanie; Shavani)
Laubscher (1986)
 
and/or  
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