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Coalingite

A valid IMA mineral species
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08511930014977149866774.jpg
Coalingite

Hunting Hill Quarry, Rockville, Montgomery County, Maryland, USA
02673240014977186229627.jpg
Coalingite

Clear Creek deposits, Idria Peak, San Benito County, California, USA
07338400014949941294972.jpg
Coalingite

Hunting Hill Quarry, Rockville, Montgomery County, Maryland, USA
09250290014969895985282.jpg
Coalingite

Hunting Hill Quarry, Rockville, Montgomery County, Maryland, USA
08560910014947116323845.jpg
Coalingite

Clear Creek deposits, Idria Peak, San Benito County, California, USA
05146750014959362446198.jpg
Coalingite

Hunting Hill Quarry, Rockville, Montgomery County, Maryland, USA
08511930014977149866774.jpg
Coalingite

Hunting Hill Quarry, Rockville, Montgomery County, Maryland, USA
08560910014947116323845.jpg
Coalingite

Clear Creek deposits, Idria Peak, San Benito County, California, USA
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About CoalingiteHide

09652900017061031096403.jpg
Coalinga, California, USA
Formula:
Mg10Fe3+2(OH)24[CO3] · 2H2O
Colour:
Deep reddish brown, brown, straw-yellow; golden brown in transmitted light.
Lustre:
Resinous
Hardness:
1 - 2
Specific Gravity:
2.32 - 2.42
Crystal System:
Trigonal
Name:
Named for the town of Coalinga, California, USA, near the type locality. The name is pronounced kƍl-inÇ”-gÄ«t.
This page provides mineralogical data about Coalingite.


Unique IdentifiersHide

Mindat ID:
1095
Long-form identifier:
mindat:1:1:1095:1
GUID
(UUID V4):
8d24d2c5-e1fd-48f1-9f13-e2ca98526d53

IMA Classification of CoalingiteHide

Classification of CoalingiteHide

Strunz-mindat (2024):
5.DA.55

5 : CARBONATES (NITRATES)
D : Carbonates with additional anions, with H2O
A : With medium-sized cations
Dana 8th ed.:
16b.7.6.1

16b : HYDRATED CARBONATES CONTAINING HYDROXYL OR HALOGEN
7 : Miscellaneous
Hey's CIM Ref.:
11.13.5

11 : Carbonates
13 : Carbonates of Fe

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
ClgIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43
ClgWarr (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 CoalingiteHide

Lustre:
Resinous
Transparency:
Translucent
Colour:
Deep reddish brown, brown, straw-yellow; golden brown in transmitted light.
Hardness:
1 - 2 on Mohs scale
Cleavage:
Distinct/Good
{0001}, perfect; another at 45°
Density:
2.32 - 2.42 g/cm3 (Measured)    2.26 g/cm3 (Calculated)

Optical Data of CoalingiteHide

Type:
Uniaxial (-)
RI values:
nω = 1.588 - 1.635 nε = 1.560 - 1.590
Max Birefringence:
δ = 0.028 - 0.045
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate
Pleochroism:
Visible
Comments:
0 = golden brown, dark brown; E = colorless.
Comments:
May be anomalously biaxial.

Chemistry of CoalingiteHide

Mindat Formula:
Mg10Fe3+2(OH)24[CO3] · 2H2O
Elements listed:
C, Fe, H, Mg, O - search for minerals with similar chemistry

Crystallography of CoalingiteHide

Crystal System:
Trigonal
Class (H-M):
3m (3 2/m) - Hexagonal Scalenohedral
Space Group:
R3m
Setting:
R3m
Cell Parameters:
a = 3.12 Å, c = 37.4 Å
Ratio:
a:c = 1 : 11.987
Unit Cell V:
315.29 ų (Calculated from Unit Cell)
Morphology:
Hexagonal plates, equant grains.
Twinning:
reflection across {0001}, common
Comment:
Z = 0.5

Crystal StructureHide

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IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0014454CoalingitePastor-Rodriguez J, Taylor H F W (1971) Crystal structure of coalingite Mineralogical Magazine 38 286-2941971New Idria serpentinite, Coalinga, California, USA0293
CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
2.34 Å(100)
4.20 Å(80)
6.05 Å(50)
1.558 Å(50)
13.4 Å(40 broad)
2.67 Å(30)
1.884 Å(30)
Comments:
Coalinga, California, USA. Data from Mumpton et al. (1965).

Geological EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest Age (Ga)
Stage 5: Initiation of plate tectonics<3.5-2.5
38 : Ophiolites
Stage 7: Great Oxidation Event<2.4
47a : [Near-surface hydration of prior minerals]
47c : [Carbonates, phosphates, borates, nitrates]
Stage 10a: Neoproterozoic oxygenation/terrestrial biosphere<0.6
50 : Coal and/or oil shale minerals<0.36
Stage 10b: Anthropogenic minerals<10 Ka
54 : Coal and other mine fire minerals (see also #51 and #56)
57 : Other minerals formed by human processes

Type Occurrence of CoalingiteHide

Type Locality:
ⓘ New Idria Serpentinite Asbestos deposits, Wright Mountain, Fresno County, California, USA
General Appearance of Type Material:
Soft, reddish-brown platelets, 0.1 to 0.2 mm in size.
Place of Conservation of Type Material:
National Museum of Natural History, Washington, D.C., USA, number 119335.
Geological Setting of Type Material:
Weathering of iron rich brucite.
Associated Minerals at Type Locality:
Serpentine SubgroupHydrotalciteChrysotile
Reference:
Mumpton, F.A., H.W. Jaffe & C.S. Thompson (1965), Coalingite, a new mineral from the New Idria serpentinite, Fresno and San Benito counties, California: American Mineralogist: 50: 1893-1913.

Synonyms of CoalingiteHide

Other Language Names for CoalingiteHide

German:Coalingit
Spanish:Coalingita

Relationship of Coalingite to other SpeciesHide

Member of:
Hydrotalcite Supergroup
Other Members of this group:
Akopovaite Al4Li2(OH)12(CO3)(H2O)3Mon. 2/m : B2/m
AmoraiteCa12Al6(OH)36(CO3)2(SO3) · 15H2O Tric. 1 : P1
BrugnatelliteMg6Fe3+(CO3)(OH)13 · 4H2OHex.
CarbocalumiteCa4Al2(OH)12(CO3) · 6H2OTrig. 3m (3 2/m) : R3c
Cualstibite GroupM2R(OH)6[Sb5+(OH)6], where M = Zn, Ni, Cu and R = Al or Fe3+
DritsiteLi2Al4(OH)12Cl2 · 3H2OHex. 6/mmm (6/m 2/m 2/m) : P63/mcm
FougĂšrite Group
Glaucocerinite Group
Hydrocalumite Group
Hydrotalcite GroupM6R3+2(OH)16Z · 4H2O, where M=Mg, Fe, Ni, R3+ = Al, Cr, Co or Fe, and Z=CO3, Cl
KarchevskyiteMg18Al9(OH)54Sr2(CO3)9(H2O)6 (H3O)5Trig.
MampsisiteCa4Al2(CO3)(OH)12 · 5H2OTric.
MuskoxiteMg7Fe4O13 · 10H2OTrig. 3m (3 2/m)
PoellmanniteCa6Al3(OH)18[Na(H2O)6](SO4)2 · 6H2OTrig. 3 : R3
Quintinite Group
UM1987-05-OH:AlCMgMg4Al2(OH)12(CO3,SO4) · 3H2O
Wermlandite GroupM7R3+2(OH)18[Ca(H2O)6][SO4]2 · 6H2O, where = Mg, Fe, Zn and R= Al or Fe
Woodwardite GroupMay be considered a subgroup of the Hydrotalcite Group.

Common AssociatesHide

Associated Minerals Based on Photo Data:
4 photos of Coalingite associated with Serpentine SubgroupD3[Si2O5](OH)4
3 photos of Coalingite associated with AntigoriteMg3(Si2O5)(OH)4
2 photos of Coalingite associated with HydromagnesiteMg5(CO3)4(OH)2 · 4H2O
1 photo of Coalingite associated with MagnesiteMgCO3
1 photo of Coalingite associated with CalciteCaCO3
1 photo of Coalingite associated with ChrysotileMg3(Si2O5)(OH)4

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.50StichtiteMg6Cr3+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.55Akopovaite Al4Li2(OH)12(CO3)(H2O)3Mon. 2/m : B2/m
5.DA.60ƠlikiteZn2Mg(CO3)2(OH)2 · 4H2OTric. 1 : P1
5.DA.65MarkliteCu5(CO3)2(OH)6 · 6H2OMon. 2/m : P21/b

Other InformationHide

Thermal Behaviour:
DTA shows endothermic peaks at 175°, 310°, and 400° C.
Notes:
Iron-rich brucite specimens transformed to coalingite in the laboratory, exposed to the atmosphere for several months.
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

Internet Links for CoalingiteHide

References for CoalingiteHide

Reference List:
Munro, R.C., Reim, K.M. (1962) Coalingite – a newcomer to the asbestos industry: Mining Engineering: 14(9): 60-62.
Mumpton, F.A., Jaffe, H.W., Thompson, C.S. (1965) Coalingite, a new mineral from the New Idria serpentinite, Fresno and San Benito counties, California. American Mineralogist: 50: 1893-1913.
Mumpton, F.A., H.W. Jaffe & C.S. Thompson (1965), Coalingite, a new mineral from the New Idria serpentinite, Fresno and San Benito counties, California: American Mineralogist: 50: 1893-1913.
Jambor, J. L. (1969) Coalingite from the Muskox Intrusion, Northwest Territories. American Mineralogist, 54 (3-4) 437-447
Pastor-Rodriguez, J., Taylor, H.F.W. (1971) Crystal structure of coalingite. Mineralogical Magazine: 38: 286-294.
Hamilton, J., Beermann, E. (1981) «Coalingite» from the Woodsreef serpentinite Barraba, New South Wales, Australia. Bulletin de Minéralogie, 104(4), 548-555.
Delnavaz, H., Allmann, R. (1988) Synthesen von Fe-Brucit, Coalingit und Pyroaurit im System MgO-Fe-O2-H2O-(CO2). Zeitschrift fĂŒr Kristallographie-Crystalline Materials, 183(1-4), 175-178.
Frost, Ray L., Bahfenne, Silmarilly, Graham, Jessica (2008) Infrared and infrared emission spectroscopic study of selected magnesium carbonate minerals containing ferric iron—Implications for the geosequestration of greenhouse gases. Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 71 (4) 1610-1616 doi:10.1016/j.saa.2008.06.006
Frost, R.L., Bahfenne, S. (2009) Raman and mid-IR spectroscopic study of the magnesium carbonate minerals — brugnatellite and coalingite. Journal of Raman Spectroscopy, 40(4), 360-365.
Frost, Ray L., Reddy, B. Jagannadha, Bahfenne, Silmarilly, Graham, Jessica (2009) Mid-infrared and near-infrared spectroscopic study of selected magnesium carbonate minerals containing ferric iron—Implications for the geosequestration of greenhouse gases. Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 72 (3) 597-604 doi:10.1016/j.saa.2008.10.043
Mills, S. J., Christy, A. G., GĂ©nin, J.-M. R., Kameda, T., Colombo, F. (2012) Nomenclature of the hydrotalcite supergroup: natural layered double hydroxides. Mineralogical Magazine, 76 (5) 1289-1336 doi:10.1180/minmag.2012.076.5.10
Zayakina, N.V., Oleinikov, O.B., Vasileva, T.I., Oparin, N.A. (2015) Coalingite from kimberlite breccia of the Manchary pipe, Central Yakutia. Geology of Ore Deposits, 57(8), 732-736.
(2023) Coalingite. Handbook of Mineralogy. Mineralogical Society of America

Localities for CoalingiteHide

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
 
  • New South Wales
    • Darling Co.
Oskierski et al. (2013) +1 other reference
  • Tasmania
    • Waratah-Wynyard municipality
R Bottrill
Austria
 
  • Styria
    • Bruck-MĂŒrzzuschlag District
      • Breitenau am Hochlantsch
        • Eibegggraben
Bojar et al. (2005)
    • Murtal District
      • Sankt Margarethen bei Knittelfeld
        • Sankt Lorenzen bei Knittelfeld
Exel (1993)
Canada
 
  • Nunavut
    • Coppermine River area
Jambor (1969)
  • QuĂ©bec
    • Abitibi-TĂ©miscamingue
      • Abitibi RCM
        • Launay
Crook III et al. (1979)
    • Estrie
      • Les Sources RCM
        • Val-des-Sources
HorvĂĄth et al. (2013)
Czech Republic
 
  • South Moravian Region
    • Brno-Country District
      • Ivančice
        • HrubĆĄice
Kováƙ +1 other reference
Italy
 
  • Aosta Valley
    • Montjovet
Ferraris (1971) +2 other references
  • Liguria
    • Genoa
      • Cogoleto
Antofilli M. et al. (1985)
  • Lombardy
    • Sondrio Province
      • Lanzada
        • Franscia
BedognĂš et al. (1993)
        • Scerscen Valley
BedognĂš et al. (1993)
      • Torre di Santa Maria
        • Ciappanico
BedognĂš et al. (1993)
Japan
 
  • Aichi Prefecture
    • Shinshiro city
Suzuki et al. (1976)
  • Fukuoka Prefecture
    • Kasuya District
侊掟èȘ äž€éƒŽ. (1987)
  • Hokkaidƍ Prefecture
    • Kamikawa Subprefecture
      • Nakagawa (Teshio) District
Yamada (2004)
  • Mie Prefecture
FĂ€rber (n.d.)
Yamada (2004)
Poland
 
  • Silesian Voivodeship
    • WodzisƂaw County
      • WodzisƂaw ƚląski
Ɓ. Kruszewski PXRD data
Romania
 
  • Suceava County
    • Iacobeni
minerals-of-the-carpathians.eu (2008)
      • Tolovanu
HĂźrtopanu (1997) +1 other reference
Russia
 
  • Chelyabinsk Oblast
Cesnokov et al. (1998)
  • Sakha
    • Khompu–May kimberlite field
N. V. Zayakina et al. (2015)
Spain
 
  • Andalusia
    • MĂĄlaga
      • Igualeja
GonzĂĄlez-PĂ©rez et al. (2023)
USA (TL)
 
  • California
    • Fresno County
      • Wright Mountain
Van Nostrand Reinholt Press: 198. +2 other references
    • San Benito County
      • Idria (New Idria)
Van Nostrand Reinholt Press: 199. +1 other reference
      • Idria Peak
www.mineralsocal.org
Mumpton et al. (1965)
      • Santa Rita Peak
Emil Box
    • San Francisco County
      • San Francisco
Van Nostrand Reinholt Press: 199. +3 other references
  • Maryland
    • Montgomery County
      • Rockville
Bernstein (1980)
  • New York
    • New York City
Jensen (1978)
  • Pennsylvania
    • Lancaster County
      • Fulton Township
FM newsletter vol.31 no.1 Jan-Mar '01 ...
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