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Gowerite (Gowerit)

Pictures (2 Images total)

Gowerit
Views (File:
1291499411
): 794
Gowerit
Größe: 59x45 mm; Fundort: Hard Scramble Claim, Ryan, Black Mts, Furnace Creek District, Death Valley National Park, Inyo Co., Kalifornien, USA
Copyright: Rock Currier; Contribution: slugslayer
Location: USA/Kalifornien (California)/Inyo Co./Death Valley National Park/Furnace Creek District/Black Mts/Hard Scramble Claim
Mineral: Gowerite
Image: 1291499411
Rating: 6 (votes: 1)
License: Usage for Mineralienatlas project only
Gowerit

Größe: 59x45 mm; Fundort: Hard Scramble Claim, Ryan, Black Mts, Furnace Creek District, Death Valley National Park, Inyo Co., Kalifornien, USA
Copyright: Rock Currier
Contribution: slugslayer 2010-12-04
Locality: Hard Scramble Claim / Black Mts / Furnace Creek District / Death Valley National Park / Inyo Co. / Kalifornien (California) / USA
Gowerit
Views (File:
1494760814
): 494
Gowerit
vom Death Valley im Inyo County, Kalifornien, USA; nadelig-tafelige, farblos-weiße Kristalle, BB = 1,5 mm
Copyright: Hannes Osterhammer; Contribution: Münchener Micromounter
Collection: Lithothek der Münchener Micromounter, Collection number: A003105, Donator: Klaus Fleck
Location: USA/Kalifornien (California)/Inyo Co./Death Valley National Park/Death Valley
Mineral: Gowerite
Image: 1494760814
License: Usage for Mineralienatlas project only
Gowerit (SNr: A003105)

vom Death Valley im Inyo County, Kalifornien, USA; nadelig-tafelige, farblos-weiße Kristalle, BB = 1,5 mm
Collection: Lithothek der Münchener Micromounter
Copyright: Hannes Osterhammer
Contribution: Münchener Micromounter 2017-05-14
Locality: Death Valley / Death Valley National Park / Inyo Co. / Kalifornien (California) / USA

You find additional Gowerit specimen at the Geolitho Museum

Collectors Summary

Color farblos, weiß
Streak color weiß
Hardness (Mohs) 3
Solubility +++ Säuren, ++ H2O, - Methanol
Crystal System monoklin, P21/a

Chemism

Chemical formula

CaB6O10·5H2O

Chemical composition

Calcium, Bor, Sauerstoff, Wasserstoff

Unit weight: 355.01952 u; Number of atoms in the formula: 32

Info

Empirical formula:

CaB6O10·5H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Hydrogen

H

2.84

10

31.25

1.0079470

10.0794700
Boron

B

18.27

6

18.75

10.8117000

64.8702000
Oxygen

O

67.60

15

46.88

15.9994300

239.9914500
Calcium

Ca

11.29

1

3.13

40.0784000

40.0784000

Analysis wt%

Ø CaO : 15.50, SrO : 0.71, B2O3 : 58.10, H2O : 25.76 (Ref: American Mineralogist 59)

Strunz 9th edition incl. updates

6.EC.10

6: Borate
E: Pentaborate
C: Schicht(Phyllo)-Pentaborate
10:Gowerit-Gruppe

Lapis Classification

V/K.05-020

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

Classification by Hölzel

6.EC.200

6: Borates
E: Pentaborates
C: Phyllopentaborates
2: Veatchite-Group - 5(3P+2T)+P

Dana 8th edition

26.05.08.01

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

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

Optical Properties

Color

farblos, weiß

Streak color

weiß

Diaphaneity (Transparency)

transparent

max. Birefringence

0.064
Birefringence chart\! Gowerite title=Birefringence chart Gowerite

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

1.484

RI value β

1.501

RI value γ / ε

1.550

Ri mean

1.512

2V angle

Biaxial (+) 63°

Optical Data Luminescence

Luminescence

fluoreszierend

Color LW-UV (365nm)

  

weiß

LW-UV Intensity

sehr schwach

LW-UV Other Colors

  

bläulich weiß

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)

12.882

Cell parameters b (Å)

16.360

Cell parameters c (Å)

6.558

Cell parameters a/b or c/a

0.787

Cell parameters c/b

0.401

Cell parameters α

90°

Cell parameters β

121.62

Cell parameters γ

90°

Z

4

Volumne (ų)

1176.915

X-Ray Powder Diffraction

9.2(20),
8.2(100),
4.09(20),
3.9(10),
3.34(10),
3.18(40),
2.960(10),
2.728(20)
XRD chart Gowerite

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)

3

VHN (Hardness Vickers)

83 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

2

2.004 ( ρ calc. Mineralienatlas )

Instability

+++ Säuren, ++ H2O, - Methanol

(Co-)Type locality

(Co-)Type locality

USA/Kalifornien (California)/Inyo Co./Death Valley National Park/Furnace Creek District/Black Mts/Hard Scramble Claim

Preface

Author (Name, Year)

Erd & McAllister & James & Almond, 1959

References

American Mineralogist 44 (1959), 911

Other languages

German

Gowerit

Spanish

Gowerita

French

Gowerite

English

Gowerite

Russian

Гоуерит

CNMNC symbol

Symbol

Gow

Locations with GPS information