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Veatchite

Pictures (3 Images total)

Veatchit
Views (File:
1281786656
): 837
Veatchit
Bildbreite: 3,6 mm; Fundort: Tick Canyon, Lang, Los Angeles Co., Kalifornien, USA
Copyright: Joachim Esche; Contribution: slugslayer
Location: USA/Kalifornien (California)/Los Angeles Co./Lang/Tick Canyon
Mineral: Veatchite
Image: 1281786656
Rating: 7.5 (votes: 2)
License: Usage for Mineralienatlas project only
Veatchit

Bildbreite: 3,6 mm; Fundort: Tick Canyon, Lang, Los Angeles Co., Kalifornien, USA
Copyright: Joachim Esche
Contribution: slugslayer 2010-08-14
Locality: Tick Canyon / Lang / Los Angeles Co. / Kalifornien (California) / USA
Veatchit
Views (File:
1166212650
): 985
Veatchit
Bildbreite: 3 mm; Fundort Billie Mine, Furnace Creek District, Death Valley, Inyo Co., Kalifornien, USA
Copyright: Stephan Wolfsried; Contribution: Hg
Location: USA/Kalifornien (California)/Inyo Co./Death Valley National Park/Furnace Creek District/Ryan/Billie Mine
Mineral: Veatchite
Image: 1166212650
Rating: 7 (votes: 3)
License: Usage for Mineralienatlas project only
Veatchit

Bildbreite: 3 mm; Fundort Billie Mine, Furnace Creek District, Death Valley, Inyo Co., Kalifornien, USA
Copyright: Stephan Wolfsried
Contribution: Hg 2006-12-15
Locality: Billie Mine / Ryan / Furnace Creek District / Death Valley National Park / Inyo Co. / Kalifornien (California) / USA
Veatchit
Views (File:
1540984211
): 320
Veatchit
Blättrige Veatchit xx; auf Colemanit; Kilik Mine,Türkei; BB: etwa 20 cm; Ausgesellt in der Sonderschau in München 2018
Copyright: Rockhounder; Contribution: Rockhounder
Collection: Sonderausstellung München 2018
Location: Türkei/Ägäisregion/Kütahya, Provinz/Emet, Landkreis/Emet/Emet Boratlagerstätte/Emet Eti Bor Mine (Killik Mine; Kilik Mine; Espey Mine)
Mineral: Veatchite
Image: 1540984211
License: Usage for Mineralienatlas project only
Veatchit

Blättrige Veatchit xx; auf Colemanit; Kilik Mine,Türkei; BB: etwa 20 cm; Ausgesellt in der Sonderschau in München 2018
Collection: Sonderausstellung München 2018
Copyright: Rockhounder
Contribution: Rockhounder 2018-10-31
Locality: Emet Eti Bor Mine (Killik Mine; Kilik Mine; Espey Mine) / Emet Boratlagerstätte / Emet / Emet, Landkreis / Kütahya, Provinz / Ägäisregion / Türkei

Collectors Summary

Color farblos
Streak color weiß
Hardness (Mohs) 2
Solubility +++ Säuren, tendiert zum Zerfall in allen Flüssigkeiten
Crystal System monoklin, Aa

Chemism

Chemical formula

Sr2[B5O8(OH)]2B(OH)3·H2O

Chemical composition

Strontium, Bor, Sauerstoff, Wasserstoff

Unit weight: 640.822435 u; Number of atoms in the formula: 40

Info

Empirical formula:

Sr2[B5O8(OH)]2B(OH)3·H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Hydrogen

H

0.79

5

12.50

1.0079470

5.0397350
Boron

B

21.93

13

32.50

10.8117000

140.5521000
Oxygen

O

49.93

20

50.00

15.9994300

319.9886000
Strontium

Sr

27.35

2

5.00

87.6210000

175.2420000

Analysis wt%

SrO : 29.80, CaO : 1.30, B2O3 : 57.70, H2O : 9.60 (Ref: American Mineralogist 50)

Strunz 9th edition incl. updates

6.EC.15

6: Borate
E: Pentaborate
C: Schicht(Phyllo)-Pentaborate
15:Veatchit-Gruppe

Lapis Classification

V/K.05-030

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

Classification by Hölzel

6.EC.260

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

Mineral status

anerkanntes Mineral

Optical Properties

Color

farblos

Streak color

weiß

max. Birefringence

0.070
Birefringence chart\! Veatchite title=Birefringence chart Veatchite

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

1.551

RI value β

1.553

RI value γ / ε

1.621

Ri mean

1.575

2V angle

Biaxial (+) 37°

Crystallography

Crystal System

monoklin

Class (H-M)

9

Space Group number

9

Space Group

Aa

Cell parameters a (Å)

6.607

Cell parameters b (Å)

11.713

Cell parameters c (Å)

20.685

Cell parameters a/b or c/a

0.564

Cell parameters c/b

1.766

Cell parameters α

90°

Cell parameters β

92.0

Cell parameters γ

90°

Z

4

Volumne (ų)

1599.791

Kristall structure

Joel D. Grice, Allan Pring: Veatchite: Structural relationships of the three polytypes. American Mineralogist v. 97 no. 4 (20121) S. 489-495.
Drei Polytypen:
Veatchit-1A, trikline Raumgruppe P1̄, mit a = 6.6378(6), b = 6.7387(6), c = 20.982(2) Å, α = 87.860(1), β = 82.696(12), γ = 60.476(1)°, V = 809.7(2) Å3;
Veatchit-1M, monokline Raumgruppe P21, mit a = 6.7127(4), b = 20.704(1), c = 6.6272(4) Å, β = 119.209(1)°, V = 805.4(2) Å3;
Veatchit-2M, monokline Raumgruppe Cc mit a = 6.6070(3), b = 11.7125(5), c = 20.6848(9) Å, β = 91.998(1)°, V = 1599.7(2) Å3

X-Ray Powder Diffraction

10.5(10), 5.64(1), 5.12(1), 3.47(2), 3.32(3), 2.865(1), 2.600(2), 2.398(1)
XRD chart Veatchite

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

Polytypes

Veatchite-A

Sr2[B5O8(OH)]2[B(OH)3]·H2O

triklin

A1, A1

1, 1

Veatchite-p

Sr2[B5O8(OH)]2B(OH)3·H2O

monoklin

Crystals 3D

Open larger view

Crystal Structure 3D

Open larger view

Physical Properties

Hardness (Mohs)

2

VHN (Hardness Vickers)

32 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

2.62 (gemessen)

2.66 ( ρ calc. Mineralienatlas )

Instability

+++ Säuren, tendiert zum Zerfall in allen Flüssigkeiten

(Co-)Type locality

(Co-)Type locality

USA/Kalifornien (California)/Los Angeles Co./Lang/Tick Canyon/Lang Mine (Sterling Mine; Sterling Borax Mine; Tick Canyon Borax Mine)

Other languages

German

Veatchit

Spanish

Veatchita

English

Veatchite

French

Veatchite-1M

Russian

Витчит

Traditional Chinese

水硼鍶石

Simplified Chinese

水硼锶石

Alternative Name

German

Veatchit-1M

CNMNC symbol

Symbol

Vea

Locations with GPS information