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Colemanite

Pictures (70 Images total)

Colemanit
Views (File:
1217789912
): 4448
Colemanit
Fundort: Grube Kurtpinari, Provinz Balikesir, Türkei; Größe: 76x50x45 mm
Copyright: Fabre Minerals; Contribution: Philip Blümner
Location: Türkei/Marmararegion/Balikesir, Provinz/Susurluk/Sultançayırı (Sultan Tschair)/Grube Kurtpinari
Mineral: Colemanite
Image: 1217789912
Rating: 10 (votes: 2)
License: Usage for Mineralienatlas project only
Colemanit

Fundort: Grube Kurtpinari, Provinz Balikesir, Türkei; Größe: 76x50x45 mm
Copyright: Fabre Minerals
Contribution: Philip Blümner 2008-08-03
Locality: Grube Kurtpinari / Sultançayırı (Sultan Tschair) / Susurluk / Balikesir, Provinz / Marmararegion / Türkei
Colemanit
Views (File:
1183717682
): 8124
Colemanit
Fundort: Bigadiç Mine, Bigadiç, Balikesir Province, Marmara Region, Türkei
Copyright: Stephan Wolfsried; Contribution: Hg
Location: Türkei/Marmararegion/Balikesir, Provinz/Bigadiç, Landkreis/Bigadiç/Bigadiç Mine
Mineral: Colemanite
Image: 1183717682
Rating: 9.33 (votes: 3)
License: Usage for Mineralienatlas project only
Colemanit

Fundort: Bigadiç Mine, Bigadiç, Balikesir Province, Marmara Region, Türkei
Copyright: Stephan Wolfsried
Contribution: Hg 2007-07-06
Locality: Bigadiç Mine / Bigadiç / Bigadiç, Landkreis / Balikesir, Provinz / Marmararegion / Türkei
Colemanit
Views (File:
1217789816
): 5174
Colemanit
Fundort: Grube Kurtpinari, Provinz Balikesir, Türkei; Größe: 60x45x42 mm
Copyright: Fabre Minerals; Contribution: Philip Blümner
Location: Türkei/Marmararegion/Balikesir, Provinz/Susurluk/Sultançayırı (Sultan Tschair)/Grube Kurtpinari
Mineral: Colemanite
Image: 1217789816
Rating: 8.5 (votes: 2)
License: Usage for Mineralienatlas project only
Colemanit

Fundort: Grube Kurtpinari, Provinz Balikesir, Türkei; Größe: 60x45x42 mm
Copyright: Fabre Minerals
Contribution: Philip Blümner 2008-08-03
Locality: Grube Kurtpinari / Sultançayırı (Sultan Tschair) / Susurluk / Balikesir, Provinz / Marmararegion / Türkei
Colemanit
Views (File:
1284407263
): 3236
Colemanit
Größe: 74x32 mm; Fundort: U. S. Borax Open Pit, U.S. Borax Mine, Boron, Kramer District, Kern Co., Kalifornien, USA
Copyright: Rock Currier; Contribution: Philip Blümner
Location: USA/Kalifornien (California)/Kern Co./Kramer District/Boron/Kramer Boratlagerstätte/U.S. Borax Mine/U.S. Borax Open Pit (Boron Pit, Rio Tinto Borax Mine)
Mineral: Colemanite
Image: 1284407263
Rating: 7.5 (votes: 2)
License: Usage for Mineralienatlas project only
Colemanit

Größe: 74x32 mm; Fundort: U. S. Borax Open Pit, U.S. Borax Mine, Boron, Kramer District, Kern Co., Kalifornien, USA
Copyright: Rock Currier
Contribution: Philip Blümner 2010-09-13
Locality: U.S. Borax Open Pit (Boron Pit, Rio Tinto Borax Mine) / U.S. Borax Mine / Kramer Boratlagerstätte / Boron / Kramer District / Kern Co. / Kalifornien (California) / USA
Colemanit
Views (File:
1360262074
): 2888
Colemanit
Größe: 17,2 x 8 x 7,1 cm, Fundort: Boraxo Mine, Ryan Area, Death Valley National Park, Inyo Co., Kalifornien, USA
Copyright: Rob Lavinsky; Contribution: thdun5
Location: USA/Kalifornien (California)/Inyo Co./Death Valley National Park/Ryan Area/Boraxo Mine
Mineral: Colemanite
Image: 1360262074
Rating: 8 (votes: 2)
License: Usage for Mineralienatlas project only
Colemanit

Größe: 17,2 x 8 x 7,1 cm, Fundort: Boraxo Mine, Ryan Area, Death Valley National Park, Inyo Co., Kalifornien, USA
Copyright: Rob Lavinsky
Contribution: thdun5 2013-02-07
Locality: Boraxo Mine / Ryan Area / Death Valley National Park / Inyo Co. / Kalifornien (California) / USA

You find additional specimen at the Geolitho Museum

Collectors Summary

Color weiß oder farblos
Streak color weiß
Lustre Glasglanz, Diamantglanz
Hardness (Mohs) 4.5
Solubility +++ Säuren, + heißes H2O, !Detergentien
Crystal System monoklin, P21/a
Morphology meist pyramidische kurze Kristalle oder massiv

Additional information / Summary

Calciumborat

Chemism

Chemical formula

CaB3O4(OH)3·H2O

Chemical composition

Calcium, Bor, Sauerstoff, Wasserstoff

Unit weight: 205.548675 u; Number of atoms in the formula: 17

Info

Empirical formula:

CaB3O4(OH)3·H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Hydrogen

H

2.45

5

29.41

1.0079470

5.0397350
Boron

B

15.78

3

17.65

10.8117000

32.4351000
Oxygen

O

62.27

8

47.06

15.9994300

127.9954400
Calcium

Ca

19.50

1

5.88

40.0784000

40.0784000

Analysis wt%

CaO : 27.28, B2O3 : 50.81, H2O : 21.91 (Ref: berechnet)

Strunz 9th edition incl. updates

6.CB.10

6: Borate
C: Triborate
B: Ketten u. Band (Ino)-Triborate
10:Colemanit-Gruppe

Lapis Classification

V/J.03-010

V: NITRATE, CARBONATE UND BORATE
J: Kettenborate [B2O4] 2- bis [B6O10] 2-

Classification by Hölzel

6.CB.140

6: Borates
C: Triborates
B: Inotriborates
1: Colemanite-Group - 3(P+2T)

Dana 8th edition

26.03.05.01

26: Hydrated Borates Containing Hydroxyl or Halogen
03: Hydrated Borates Containing Hydroxyl or Halogen

IMA status

Erstbeschreibung vor CNMNC-Gründung (1959), als Mineral meist anerkannt

Mineral status

anerkanntes Mineral

Optical Properties

Color

weiß oder farblos

Streak color

weiß

Diaphaneity (Transparency)

transparent, durchscheinend

Lustre

Glasglanz, Diamantglanz

max. Birefringence

0.028
Birefringence chart\! Colemanite title=Birefringence chart Colemanite

Michel-Levy Color Chart viewed according to the maximum birefringence (at 30μm). Mineral color is not taken into account. Click on the image to enlarge or change thickness.

RI value α / ω / n

1.586

RI value β

1.592

RI value γ / ε

1.614

Ri mean

1.597

2V angle

Biaxial (+) 55°

Orientation

X = b, Y ^ c = 6

Dispersion

Schwach, r > v

Optical Data Luminescence

Color LW-UV (365nm)

  

bläulich weiß

Color SW-UV (254nm)

  

bläulich weiß

LW-UV Other Colors

    

gelblich weiß, grünlich weiß

SW-UV Other Colors

    

gelblich weiß, grünlich weiß

Color SW-UV Afterglow (254nm)

  

grünlich weiß

Crystallography

Crystal System

monoklin

Class (H-M)

2/m

Space Group number

14

Space Group

P21/a

Cell parameters a (Å)

8.743

Cell parameters b (Å)

11.264

Cell parameters c (Å)

6.102

Cell parameters a/b or c/a

0.776

Cell parameters c/b

0.542

Cell parameters α

90°

Cell parameters β

110.12

Cell parameters γ

90°

Z

4

Volume (ų)

564.26

X-Ray Powder Diffraction

5.64(50),
4.00(40),
3.85(50),
3.29(40),
3.13(100),
2.550(50),
2.141(40),
2.010(50)
XRD chart Colemanite

Calculated from d-spacing and intensity at 0.1541838 nm (Cu)

Morphology

meist pyramidische kurze Kristalle oder massiv

Crystals 3D

Open larger view

Crystal Structure 3D

Open larger view

Physical Properties

Hardness (Mohs)

4.5

VHN (Hardness Vickers)

280 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

2.423 (gemessen) 2.436 (berechnet)

2.419 ( ρ calc. Mineralienatlas )

Radioactivity

keine

Instability

+++ Säuren, + heißes H2O, !Detergentien

(Co-)Type locality

(Co-)Type locality

USA/Kalifornien (California)/Inyo Co./Death Valley National Park/Furnace Creek District

Preface

Occurrences

in Playa-Seen und Salzpfannen

Associations

Borax, Ulexit

Name from

nach dem amerikanischen Bergwerksunternehmer William Tell Coleman, * 1824, ✝ 1893

Author (Name, Year)

Hanks, 1883

Detailed description

weitere Links:

References

Handbook of Mineralogy (Anthony et al.), 5 (2003), 158

Paolo Lotti, G. Diego Gatta, Nicola Demitri et al.: Crystal chemistry and temperature behavior of the natural hydrous borate colemanite, a mineral commodity of boron. Physics and Chemistry of Minerals Volume 45, Issue 5 (2018) S. 405–422.

Other languages

German

Colemanit

Spanish

Colemanita

English

Colemanite

French

Colemanite

Russian

Колеманит

Ukrainian

Колеманіт

Traditional Chinese

硬硼酸鈣石

Simplified Chinese

硬硼酸钙石

Alternative Name

Borspar

German

Neocolemanit

Spanish

Neocolemanita

Neocolemanite

CNMNC symbol

Symbol

Cole

Locations with GPS information

IDs

GUSID (Global unique identifier short form) LxnucDHFLU-5GQ7NQA8jKw
GUID (Global unique identifier) 70EE192F-C531-4F2D-B919-0ECD400F232B
Database ID 793