https://www.mineraliengrosshandel.com
https://weloveminerals.com/
https://www.mineral-bosse.de
https://www.mineralbox.biz
https://www.edelsteine-neuburg.de
'._('einklappen').'
 

Tunellite

Pictures (4 Images total)

Tunellit
Views (File:
1340732200
): 1011
Tunellit
Größe: 76x57 mm; Fundort: Boron, Kern Co., Kalifornien, USA
Copyright: Jewels-Fine-Minerals; Contribution: Philip Blümner
Location: USA/Kalifornien (California)/Kern Co./Kramer District/Boron
Mineral: Tunellite
Image: 1340732200
Rating: 5 (votes: 1)
License: Usage for Mineralienatlas project only
Tunellit

Größe: 76x57 mm; Fundort: Boron, Kern Co., Kalifornien, USA
Copyright: Jewels-Fine-Minerals
Contribution: Philip Blümner 2012-06-26
Locality: Boron / Kramer District / Kern Co. / Kalifornien (California) / USA
Tunellit
Views (File:
1423827322
): 839
Tunellit
Größe: 47x42x24 mm; Fundort: U. S. Borax Open Pit, Boron, Kern Co., Kalifornien, USA
Copyright: Bob Griffis Minerals; 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: Tunellite
Image: 1423827322
License: Usage for Mineralienatlas project only
Tunellit

Größe: 47x42x24 mm; Fundort: U. S. Borax Open Pit, Boron, Kern Co., Kalifornien, USA
Copyright: Bob Griffis Minerals
Contribution: Philip Blümner 2015-02-13
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
Tunellit
Views (File:
1423827343
): 623
Tunellit
Größe: 56x49x33 mm; Fundort: U. S. Borax Open Pit, Boron, Kern Co., Kalifornien, USA
Copyright: Bob Griffis Minerals; 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: Tunellite
Image: 1423827343
License: Usage for Mineralienatlas project only
Tunellit

Größe: 56x49x33 mm; Fundort: U. S. Borax Open Pit, Boron, Kern Co., Kalifornien, USA
Copyright: Bob Griffis Minerals
Contribution: Philip Blümner 2015-02-13
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
Tunellit
Views (File:
1467230669
): 508
Tunellit
Tafeliger farbloser Kristall, der ganze Kristall im Durchlicht, Bb = 15 mm; Fundort: Boraxo Mine, Ryan Area, Death Valley National Park, Inyo Co., Kalifornien, USA.
Copyright: Manfred Früchtl; Contribution: Münchener Micromounter
Collection: Lithothek der Münchener Micromounter, Collection number: A002598, Donator: Klaus Fleck
Location: USA/Kalifornien (California)/Inyo Co./Death Valley National Park/Ryan Area/Boraxo Mine
Mineral: Tunellite
Image: 1467230669
License: Usage for Mineralienatlas project only
Tunellit (SNr: A002598)

Tafeliger farbloser Kristall, der ganze Kristall im Durchlicht, Bb = 15 mm; Fundort: Boraxo Mine, Ryan Area, Death Valley National Park, Inyo Co., Kalifornien, USA.
Collection: Lithothek der Münchener Micromounter
Copyright: Manfred Früchtl
Contribution: Münchener Micromounter 2016-06-29
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 farblos
Streak color weiß
Hardness (Mohs) 2.5
Solubility +++ Säuren, Alkalien - H2O
Crystal System monoklin, P21/a

Chemism

Chemical formula

SrB6O9(OH)2·3H2O

Chemical composition

Strontium, Bor, Sauerstoff, Wasserstoff

Unit weight: 384.546796 u; Number of atoms in the formula: 29

Info

Empirical formula:

SrB6O9(OH)2·3H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Hydrogen

H

2.10

8

27.59

1.0079470

8.0635760
Boron

B

16.87

6

20.69

10.8117000

64.8702000
Oxygen

O

58.25

14

48.28

15.9994300

223.9920200
Strontium

Sr

22.79

1

3.45

87.6210000

87.6210000

Analysis wt%

B2O3 : 53.70, SrO : 27.91, H2O : 18.71 (Ref: USGS 61)

Strunz 9th edition incl. updates

6.FC.05

6: Borate
F: Hexaborate
C: Schicht(Phyllo)-Hexaborate
05:Tunellit-Gruppe

Lapis Classification

V/K.06-020

V: NITRATE, CARBONATE UND BORATE
K: Schichtborate mit komplexen Baugruppen [Bx(O,OH)y]

Classification by Hölzel

6.FC.120

6: Borates
F: Hexaborates
C: Phyllohexaborates
1: Nobleite-Group - 6(3P+3T)

Dana 8th edition

26.06.06.02

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

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

Optical Properties

Color

farblos

Streak color

weiß

max. Birefringence

0.050
Birefringence chart\! Tunellite title=Birefringence chart Tunellite

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

1.519

RI value β

1.534

RI value γ / ε

1.569

Ri mean

1.541

2V angle

Biaxial (+) 68°

Optical Data Luminescence

Color LW-UV (365nm)

  

gelb

Color SW-UV (254nm)

  

gelb

Afterglow (Persistant Luminescence)

keine Daten

Crystallography

Crystal System

monoklin

Class (H-M)

2/m

Space Group number

14

Space Group

P21/a

Cell parameters a (Å)

14.390

Cell parameters b (Å)

8.213

Cell parameters c (Å)

9.934

Cell parameters a/b or c/a

1.752

Cell parameters c/b

1.210

Cell parameters α

90°

Cell parameters β

114.3

Cell parameters γ

90°

Z

4

Volume (ų)

1070.033

X-Ray Powder Diffraction

6.78(10),
6.57(100),
5.138(10),
4.525(10),
3.867(10),
3.592(10),
3.045(10),
2.503(10)
XRD chart Tunellite

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

Crystals 3D

Open larger view

Crystal Structure 3D

Open larger view

Physical Properties

Hardness (Mohs)

2.5

VHN (Hardness Vickers)

53 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

2.40 (gemessen)

2.387 ( ρ calc. Mineralienatlas )

Instability

+++ Säuren, Alkalien - H2O

(Co-)Type locality

(Co-)Type locality

USA/Kalifornien (California)/Kern Co./Kramer District/Boron/Kramer Boratlagerstätte/Pacific West Coast Borax Mine

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

Preface

Author (Name, Year)

Erd & Morgan & Clark, 1961

References

United States Geological Survey, Professional Paper 424C (1961), 294

Other languages

German

Tunellit

Spanish

Tunellita

English

Tunellite

French

Tunellite

Russian

Танелит

Simplified Chinese

四水锶硼石

CNMNC symbol

Symbol

Tnl

Locations with GPS information

IDs

GUSID (Global unique identifier short form) LyyP3Qm5OUWjcs1KaJi3Eg
GUID (Global unique identifier) DD8F2C2F-B909-4539-A372-CD4A6898B712
Database ID 3942