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Bakerite

Pictures (5 Images total)

Bakerit
Views (File:
1157751231
): 1686
Bakerit
Größe: 40x34 mm; Fundort: Corkscrew Mine, Corkscrew Canyon, Furnace Creek District, Death Valley, Inyo Co., Kalifornien, USA
Copyright: John Sobolewski; Contribution: slugslayer
Location: USA/Kalifornien (California)/Inyo Co./Death Valley National Park/Furnace Creek District/Corkscrew Canyon/Corkscrew Mine
Mineral: Bakerite
Image: 1157751231
Rating: 7 (votes: 1)
License: Usage for Mineralienatlas project only
Bakerit

Größe: 40x34 mm; Fundort: Corkscrew Mine, Corkscrew Canyon, Furnace Creek District, Death Valley, Inyo Co., Kalifornien, USA

Copyright: John Sobolewski
Contribution: slugslayer 2006-09-08
Locality: Corkscrew Mine / Corkscrew Canyon / Furnace Creek District / Death Valley National Park / Inyo Co. / Kalifornien (California) / USA
Bakerit xx
Views (File:
1175193960
): 2047
Bakerit xx
Fundort: Rio Gavottino, Genua, Italien; Bildbreite: 4 mm
Copyright: loismin; Contribution: loismin
Location: Italien/Ligurien (Liguria), Region/Genua (Genova), Metropolitanstadt/Casarza Ligure/Rio Gavottino
Mineral: Bakerite
Image: 1175193960
Rating: 7 (votes: 1)
License: Usage for Mineralienatlas project only
Bakerit xx

Fundort: Rio Gavottino, Genua, Italien; Bildbreite: 4 mm

Copyright: loismin
Contribution: loismin 2007-03-29
Locality: Rio Gavottino / Casarza Ligure / Genua (Genova), Metropolitanstadt / Ligurien (Liguria), Region / Italien
Bakerit
Views (File:
1327592071
): 1229
Bakerit
Größe: bis 2,55mm; Fundort: Rio Gavottino, Casarza Ligure, Genova, Provinz, Ligurien (Liguria), Region, Italien
Copyright: Matteo Chinellato; Contribution: Hg
Collection: Domenico Preite
Location: Italien/Ligurien (Liguria), Region/Genua (Genova), Metropolitanstadt/Casarza Ligure/Rio Gavottino
Mineral: Bakerite
Image: 1327592071
License: Usage for Mineralienatlas project only
Bakerit

Größe: bis 2,55mm; Fundort: Rio Gavottino, Casarza Ligure, Genova, Provinz, Ligurien (Liguria), Region, Italien

Collection: Domenico Preite
Copyright: Matteo Chinellato
Contribution: Hg 2012-01-26
Locality: Rio Gavottino / Casarza Ligure / Genua (Genova), Metropolitanstadt / Ligurien (Liguria), Region / Italien
Bakerit
Views (File:
1470046027
): 755
Bakerit
von der Corkscrew Mine im Death Valley, Inyo Co., USA; derb, weiß, BB = 27,5 mm
Copyright: Hannes Osterhammer; Contribution: Münchener Micromounter
Collection: Lithothek der Münchener Micromounter, Collection number: A002572, Donator: Klaus Fleck
Location: USA/Kalifornien (California)/Inyo Co./Death Valley National Park/Furnace Creek District/Corkscrew Canyon/Corkscrew Mine
Mineral: Bakerite
Image: 1470046027
License: Usage for Mineralienatlas project only
Bakerit (SNr: A002572)

von der Corkscrew Mine im Death Valley, Inyo Co., USA; derb, weiß, BB = 27,5 mm

Collection: Lithothek der Münchener Micromounter
Copyright: Hannes Osterhammer
Contribution: Münchener Micromounter 2016-08-01
Locality: Corkscrew Mine / Corkscrew Canyon / Furnace Creek District / Death Valley National Park / Inyo Co. / Kalifornien (California) / USA
Bakerit
Views (File:
1597064928
): 246
Bakerit
Baker Wash, Kalifornien, USA. Bildbreite 1,2 mm
Copyright: Ulrich Baumgärtl; Contribution: Ulrich Baumgärtl
Collection: Ulrich Baumgärtl
Mineral: Bakerite
Image: 1597064928
License: Usage for Mineralienatlas project only
Bakerit

Baker Wash, Kalifornien, USA. Bildbreite 1,2 mm

Collection: Ulrich Baumgärtl
Copyright: Ulrich Baumgärtl
Contribution: Ulrich Baumgärtl 2020-08-10

You find additional specimen at the Geolitho Museum

Collectors Summary

Color farblos, weiß
Streak color weiß
Hardness (Mohs) 4.5
Solubility +++ HCl
Crystal System monoklin, P21/c

Additional information / Summary

Das Mineral wurde diskreditiert [IMA 16-A]

Chemism

Chemical formula

Ca4B4(BO4)(SiO4)3(OH)3·H2O

Chemical composition

Calcium, Silicium, Bor, Sauerstoff, Wasserstoff

Unit weight: 623.657025 u; Number of atoms in the formula: 37

Info

Empirical formula:

Ca4B4(BO4)(SiO4)3(OH)3·H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

0.81

5

13.51

1.0079470

5.0397350

Boron

B

8.67

5

13.51

10.8117000

54.0585000

Oxygen

O

51.31

20

54.05

15.9994300

319.9886000

Silicon

Si

13.51

3

8.11

28.0855300

84.2565900

Calcium

Ca

25.71

4

10.81

40.0784000

160.3136000

Analysis wt%

CaO : 35.14, B2O3 : 27.58, SiO2 : 27.90, H2O : 8.90 (Ref: American Mineralogist 56)

Strunz 9th edition incl. updates

9.AJ.20

9: Silikate (Germanate)
A: Inselsilikate (Nesosilikate)
J: Insel(Neso)silikate mit BO3 Triangeln und /oder B[4], Be[4] Tetraedern, eckenteilend mit SiO4
20:Datolith-Gruppe

Lapis Classification

VIII/B.29-020

VIII: SILIKATE
B: Inselsilikate mit tetraederfremden Anionen
29: Kationen mit Koordinationszahlen zwischen [8] und [12]; Beryllium- und Bor-Inselsilikate; Datolith/Gadolinit-Gruppe

Classification by Hölzel

9.AK.220

9: SILICATES
A: Nesosilicates
K: Boro and Beryllo Nesosilicates
2: Datolite-Group (without REE's)

Dana 8th edition

54.02.01b.01

54: Nesosilicates Nesosilicate Borosilicates and Some Beryllosilicates
02: Nesosilicates Nesosilicate Borosilicates and Some Beryllosilicates with B in [4] coordination
01b: Datolite group (Homilite series)

IMA status

Mineral diskreditiert - IMA 16-A Gadolinite supergroup - CNMNC Newsletter No. 33, October 2016; Mineralogical Magazine, 80, 1135–1144.

Mineral status

diskreditiert

IMA Classification

IMA Classification

Gadolinite Group

Optical Properties

Color

farblos, weiß

Streak color

weiß

Diaphaneity (Transparency)

transparent

max. Birefringence

0.030

Birefringence chart\! Bakerite title=Birefringence chart Bakerite

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

1.624

RI value β

1.635

RI value γ / ε

1.654

Ri mean

1.638

2V angle

Biaxial (-) 85°

Optical Data Luminescence

Color LW-UV (365nm)

 

weiß

Color SW-UV (254nm)

 

weiß

Afterglow (Persistant Luminescence)

keine Daten

Crystallography

Crystal System

monoklin

Class (H-M)

2/m

Space Group number

14

Space Group

P21/c

Cell parameters a (Å)

4.850

Cell parameters b (Å)

7.627

Cell parameters c (Å)

9.659

Cell parameters a/b or c/a

0.636

Cell parameters c/b

1.266

Cell parameters α

90°

Cell parameters β

90.25

Cell parameters γ

90°

Z

1

Volume (ų)

357.292

X-Ray Powder Diffraction

3.751(50),
3.401(30),
3.112(100),
2.984(50),
2.852(80),
2.520(40),
2.240(40),
2.182(40)

XRD chart Bakerite

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)

4.5

VHN (Hardness Vickers)

280 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

2.7 - 2.9 / Durchschnittlich = 2.8

2.898 ( ρ calc. Mineralienatlas )

Instability

+++ HCl

Preface

Author (Name, Year)

Giles, 1903

References

American Mineralogist 89 (2004), 767

IMA 16-A Gadolinite supergroup - CNMNC Newsletter No. 33, October 2016; Mineralogical Magazine, 80, 1135–1144. [diskreditiert]

IMA group assignments

Other languages

German

Bakerit

Spanish

Bakerita

English

Bakerite

French

Bakerite

Russian

Бакерит

Russian

Бейкерит

Locations with GPS information

IDs

GUSID (Global unique identifier short form) 6pgUWI_5jUqzkBi68mb6aA
GUID (Global unique identifier) 581498EA-F98F-4A8D-B390-18BAF266FA68
Database ID 267