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Colemanite

A valid IMA mineral species - grandfathered
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About ColemaniteHide

06994610014946346272003.jpg
William Tell Coleman
Formula:
Ca[B3O4(OH)3] · H2O
Colour:
Colourless, white, yellowish, grey; colourless in transitted light
Lustre:
Adamantine, Vitreous
Hardness:
Specific Gravity:
2.423
Crystal System:
Monoclinic
Name:
Named in 1883 in honor of William Tell Coleman (29 February 1824, Cynthiana, Kentucky, USA - 22 November 1893, San Fransico, California, USA), a founder of the California borax industry and owner of the mine where the mineral was first found.
The fluorescence observed for Turkish specimens may come from As3+ and/or As5+, that were found to be present in the amount up to 125 ppm (Helvacı et al, 2017).




Unique IdentifiersHide

Mindat ID:
1108
Long-form identifier:
mindat:1:1:1108:8
GUID
(UUID V4):
995a0912-6e1e-44ca-ba40-55f6bf6f925a

IMA Classification of ColemaniteHide

Approved, 'Grandfathered' (first described prior to 1959)
IMA Formula:
CaB3O4(OH)3 · H2O
First published:
1883

Classification of ColemaniteHide

6.CB.10

6 : BORATES
C : Triborates
B : Ino-triborates
26.3.5.1

26 : HYDRATED BORATES CONTAINING HYDROXYL OR HALOGEN
3 : Triborates
9.3.14

9 : Borates
3 : Borates of Ca and Sr

Mineral SymbolsHide

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

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

Physical Properties of ColemaniteHide

Adamantine, Vitreous
Transparency:
Transparent, Translucent
Colour:
Colourless, white, yellowish, grey; colourless in transitted light
Streak:
White
Hardness:
4½ on Mohs scale
Cleavage:
Perfect
On {010} perfect; on {001} distinct.
Fracture:
Irregular/Uneven, Sub-Conchoidal
Density:
2.423(5) g/cm3 (Measured)    2.422 g/cm3 (Calculated)

Optical Data of ColemaniteHide

Type:
Biaxial (+)
RI values:
nα = 1.586 nβ = 1.592 nγ = 1.614
2V:
Measured: 55° to 56°, Calculated: 56°
Max Birefringence:
δ = 0.028
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
relatively weak r > v
Optical Extinction:
X = b; Y ∧ c = -6°; Z ∧ c = 84°.

Chemistry of ColemaniteHide

Mindat Formula:
Ca[B3O4(OH)3] · H2O

Crystallography of ColemaniteHide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P21/b
Setting:
P21/a
Cell Parameters:
a = 8.712(2) Å, b = 11.247(3) Å, c = 6.091(1) Å
β = 110.12°
Ratio:
a:b:c = 0.775 : 1 : 0.542
Unit Cell V:
560.40 ų (Calculated from Unit Cell)
Z:
2
Morphology:
Crystals commonly short prismatic [001] with large (110), large to small (001) and complex terminations; pseudo-rhombohedral with large (110) and (301); pseudo-octahedral with large (221) and (011). Massive, cleavable to granular and compact.

Crystallographic forms of ColemaniteHide

Crystal Atlas:
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Colemanite no.6 - Goldschmidt (1913-1926)
Colemanite no.46 - Goldschmidt (1913-1926)
3d models and HTML5 code kindly provided by www.smorf.nl.

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Crystal StructureHide

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IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0005295ColemaniteBurns P C, Hawthorne F C (1993) Hydrogen bonding in colemanite: An X-ray and structure-energy study The Canadian Mineralogist 31 297-30419930293
CIF Raw Data - click here to close

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
3.13 Å(100)
5.64 Å(50)
3.85 Å(50)
2.550 Å(50)
2.010 Å(50)
4.00 Å(36)
3.29 Å(36)
Comments:
Twenty Mule Team Canyon, Death Valley, USA.

Geological EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest Age (Ga)
Near-surface Processes
25 : Evaporites (prebiotic)
Geological Setting:
Borate deposits formed in arid alkalai lacustrine environments.

Type Occurrence of ColemaniteHide

General Appearance of Type Material:
Like semi-crystalline calcite.
Place of Conservation of Type Material:
No defined type material.
Geological Setting of Type Material:
Evaporite borate deposit.

Synonyms of ColemaniteHide

Other Language Names for ColemaniteHide

Common AssociatesHide

Associated Minerals Based on Photo Data:
169 photos of Colemanite associated with CalciteCaCO3
27 photos of Colemanite associated with HydroboraciteCaMg[B3O4(OH)3]2 · 3H2O
25 photos of Colemanite associated with CelestineSrSO4
22 photos of Colemanite associated with UlexiteNaCa[B5O6(OH)6] · 5H2O
21 photos of Colemanite associated with Todorokite(Na,Ca,K,Ba,Sr)1-x(Mn,Mg,Al)6O12 · 3-4H2O
20 photos of Colemanite associated with PararealgarAs4S4
18 photos of Colemanite associated with VeatchiteSr2B11O16(OH)5 · H2O
14 photos of Colemanite associated with InyoiteCa(H4B3O7)(OH) · 4H2O
12 photos of Colemanite associated with NobleiteCaB6O9(OH)2 · 3H2O
9 photos of Colemanite associated with RealgarAs4S4

Related Minerals - Strunz-mindat GroupingHide

6.CB.15HydroboraciteCaMg[B3O4(OH)3]2 · 3H2OMon. 2/m : P2/b
6.CB.20HowliteCa2B5SiO9(OH)5Mon. 2/m : P21/b
6.CB.25JarandoliteCa[B3O4(OH)3]Mon. 2/m : P21/b

Fluorescence of ColemaniteHide

Bright pale yellow fluorescence, may phosphoresce pale green.

Other InformationHide

IR Spectrum:
Boron Open Pit material, [cm-1]: 3608, 3525, 3245sw, 1675sh, 1590sh, 1460sh, 1363s, 1330s, 1282, 1229, 1154, 1117, 1065sh, 1044s, 935s, 893s, 865sh, 813, 758, 732, 695sh, 669, 629, 603w, 578, 546w, 513, 495w, 422
Electrical:
Pyroelectric and piezoelectric at very low temperatures.
Thermal Behaviour:
Before the blowpipe it exfoliates, decrepitates violently, and melts imperfectly.
Notes:
Soluble in hot HCl, with the separation of boric acid upon cooling. Very slightly soluble in water (1 part in 1,100 at 20°-25°).
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
Industrial Uses:
Ore of boron.

Colemanite in petrologyHide

An essential component of rock names highlighted in red, an accessory component in rock names highlighted in green.

Internet Links for ColemaniteHide

References for ColemaniteHide

Reference List:

Localities for ColemaniteHide

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.
Argentina
 
  • Catamarca Province
    • Antofagasta de la Sierra Department
  • Jujuy Province
    • Susques Department
      • Coranzuli
      • Sijes
    • Tumbaya Department
  • Salta Province
    • Los Andes department
      • San Antonio de los Cobres
        • Salar de Pastos Grandes
Belarus
 
  • Minsk Region
    • Salihorsk District
      • Soligorsk
Bolivia
 
  • Potosí
    • Sud Lípez Province
Canada
 
  • New Brunswick
    • Kings Co.
      • Cardwell Parish
        • Penobsquis
      • Hammond Parish
        • Salt Springs evaporite deposit
      • Studholm Parish
Greece
 
  • North Aegean
    • Samos
      • Western Samos
India
 
  • Ladakh
    • Leh District
Iran
 
  • Zanjan Province
    • Mahneshan County
      • Dandi
Kazakhstan
 
  • Atyrau Region
    • Inder District
Mexico
 
  • Sonora
    • Magdalena Municipality
      • Aguja
    • Tubutama Municipality
      • La Salada
Serbia
 
  • Central Serbia
    • Raška District
      • Raška
        • Jarandol Basin
          • Baljevac na Ibru
            • Bela Stena
Turkey
 
  • Balikesir Province
    • Bigadiç District
      • Faraşköy
      • Iskeleköy (Iskele)
    • Gönen District
    • Susurluk District
      • Sultançayırı (Sultan Tschair)
  • Bursa Province
    • Mustafakemalpaşa District
  • Eskişehir Province
    • Seyitgazi District
      • Kirka
  • Kütahya Province
    • Emet District
      • Doğanlar village
      • Emet Borate deposit
USA
 
  • Arizona
    • Maricopa County
      • Gila Bend
  • California
    • Inyo County
      • Amargosa Range
        • Black Mountains
          • Monte Blanco
          • Zabriskie Point
      • Amargosa Valley
      • Dublin Hills
        • Shoshone
      • Furnace Creek
        • Furnace Creek Ranch
        • Ryan
          • Mouth of Corkscrew Canyon area
        • Travertine Point
        • Twenty Mule Team Canyon
      • Greenwater Range
        • Ryon summit
      • Mushroom Rock
      • Resting Spring Range
    • Kern County
    • Los Angeles County
        • Tick Canyon
          • Tick Canyon Borate deposit
    • San Bernardino County
      • Argus Range (Argus Mountains; Darwin Range; Tortoise Mountains)
        • Argus District
          • Trona
      • Avawatz Mts (Avawatz Range)
        • Cave Spring
      • Barstow Mining District
        • Barstow
          • Lead Mountain [2]
      • Belleville Mining District
        • Daggett Ridge
      • Cady Mountains
        • Hector
      • Calico Mts (Calico Hills)
        • Calico District (Daggett District; Calico-Daggett area)
          • Calico
          • Yermo (Marian; Marion; Otis)
      • East Kramer Mining District
        • East Kramer Borate area (East Kramer Colemanite area)
          • Kramer Junction (Beecher's Corners; Beechers Corners; Four Corners)
          • Phelan
          • Red Buttes
      • Owlshead Mountains
      • Quail Mountains
      • Slate Range
        • Slate Range District (Arondo District)
          • Straw Peak
      • Sperry Hills
        • Acme (Morrison)
    • Ventura County
      • Ojai
      • San Emigdio Mountains
        • Frazier Mountain Mining District (Fraser Mountain Mining District)
          • Frazier Park area
            • Mount Pinos
        • Ventura County Borate Mining District (Stauffer Mining District)
          • Lake of the Woods area
            • Lockwood Valley
  • Nevada
    • Clark County
      • Muddy Mountains
        • Muddy Mountains Mining District
 
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