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Benstonite

Pictures (3 Images total)

Benstonit XX auf Sphalerit
Views (File:
1170065224
): 2384
Benstonit XX auf Sphalerit
Größe: 7.8 x 4.9 x 4 cm; Fundort: Minerva No. 1 Mine, Cave-in-Rock, Illinois-Kentucky Fluorspar District, Hardin Co., Illinois, USA
Copyright: Rob Lavinsky; Contribution: slugslayer
Location: USA/Illinois/Hardin Co./Illinois-Kentucky Fluorspar District/Cave-in-Rock Sub-District/Cave-in-Rock/Minerva No. 1 Mine (Ozark Mahoning No.1)
Mineral: Benstonite
Image: 1170065224
Rating: 5.5 (votes: 2)
License: Usage for Mineralienatlas project only
Benstonit XX auf Sphalerit

Größe: 7.8 x 4.9 x 4 cm; Fundort: Minerva No. 1 Mine, Cave-in-Rock, Illinois-Kentucky Fluorspar District, Hardin Co., Illinois, USA

Copyright: Rob Lavinsky
Contribution: slugslayer 2007-01-29
Locality: Minerva No. 1 Mine (Ozark Mahoning No.1) / Cave-in-Rock / Cave-in-Rock Sub-District / Illinois-Kentucky Fluorspar District / Hardin Co. / Illinois / USA
Benstonit
Views (File:
1408010276
): 1345
Benstonit
Weiße Benstonit-Kristalle mit Hausmannit. Fundort: Langban, Filipstad, Schweden. Bildbreite: 1,3 mm.
Copyright: Ulrich Baumgärtl; Contribution: raritätenjäger
Collection: Ulrich Baumgärtl
Location: Schweden/Värmland, Provinz/Filipstad, Gemeinde/Långban, Distrikt
Mineral: Benstonite, Hausmannite
Image: 1408010276
License: Usage for Mineralienatlas project only
Benstonit

Weiße Benstonit-Kristalle mit Hausmannit. Fundort: Langban, Filipstad, Schweden. Bildbreite: 1,3 mm.

Collection: Ulrich Baumgärtl
Copyright: Ulrich Baumgärtl
Contribution: raritätenjäger 2014-08-14
Locality: Långban, Distrikt / Filipstad, Gemeinde / Värmland, Provinz / Schweden
Benstonit, Tokkoit
Views (File:
1712305508
): 16
Benstonit, Tokkoit
Weißer Benstonit zusammen mit strahligem, gelblichbraunem Tokkoit Murun-Massiv, Jakutien, Russland. Größe des Stückes etwa 44 mm x 19 mm.
Copyright: Klaus Schäfer; Contribution: Klaus Schäfer
Collection: Klaus Schäfer, Collection number: SyS-Benst-3-1-1
Location: Russland/Ferner Osten, Föderationskreis/Sacha (Sakha, Jakutien, Якутия), Republik/Aldan, Ulus (Rajon)/Murun-Massiv (Murunskyi Massif)
Mineral: Benstonite, Tokkoite
Image: 1712305508
License: Usage for Mineralienatlas project only
Benstonit, Tokkoit (SNr: SyS-Benst-3-1-1)

Weißer Benstonit zusammen mit strahligem, gelblichbraunem Tokkoit Murun-Massiv, Jakutien, Russland. Größe des Stückes etwa 44 mm x 19 mm.

Collection: Klaus Schäfer
Copyright: Klaus Schäfer
Contribution: Klaus Schäfer 2024-04-05
Locality: Murun-Massiv (Murunskyi Massif) / Aldan, Ulus (Rajon) / Sacha (Sakha, Jakutien, Якутия), Republik / Ferner Osten, Föderationskreis / Russland

Collectors Summary

Color schneeweiß, gelbbraun, weiß, hellgelb
Streak color weiß
Hardness (Mohs) 3.5
Solubility +++ Säuren
Crystal System trigonal, R3

Chemism

Chemical formula

(Ba,Sr)6(Ca,Mn)6Mg(CO3)13

Chemical composition

Barium, Calcium, Magnesium, Mangan, Strontium, Kohlenstoff, Sauerstoff

Unit weight: 1816.58899485 u; Number of atoms in the formula: 65

Info

Empirical formula:

(Ba0.75Sr0.25)6(Ca0.75Mn0.25)6Mg(CO3)13

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Carbon

C

8.60

13

20.00

12.0107800

156.1401400

Oxygen

O

34.35

39

60.00

15.9994300

623.9777700

Magnesium

Mg

1.34

1

1.54

24.3050600

24.3050600

Calcium

Ca

9.93

4.5

6.92

40.0784000

180.3528000

Manganese

Mn

4.54

1.5

2.31

54.9380499

82.4070749

Strontium

Sr

7.24

1.5

2.31

87.6210000

131.4315000

Barium

Ba

34.02

4.5

6.92

137.3277000

617.9746500

Analysis wt%

BaO : 43.05, SrO : 4.02, CaO : 19.52, MgO : 1.69, CO2 : 31.35 (Ref: American Mineralogist 62)

Strunz 9th edition incl. updates

5.AB.55

5: Carbonate (Carbonate, Nitrate)
A: Carbonate ohne weitere Anionen, ohne H2O
B: Alkali-Erden- (und andere M2*) Carbonate
55:Juangodoyit-Gruppe

Lapis Classification

V/B.03-080

V: NITRATE, CARBONATE UND BORATE
B: Wasserfreie Carbonate [CO3] 2-, ohne fremde Anionen
3: Dolomit-Gruppe

Classification by Hölzel

5.AB.390

5: CARBONATES NITRATES ARSENITES SULFITES SELENITES TELLURITES IODATES
A: Carbonates (-Anions -Water)
B: Carbonates: hexagonal or trigonal
3: Other Double Carbonates

Dana 8th edition

14.02.03.01

14: Anhydrous Carbonates
02: Anhydrous Carbonates with Compound Formula A+ B++ (CO3)2

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

Optical Properties

Color

schneeweiß, gelbbraun, weiß, hellgelb

Streak color

weiß

Diaphaneity (Transparency)

durchscheinend

max. Birefringence

0.163

Birefringence chart\! Benstonite title=Birefringence chart Benstonite

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

1.690

RI value γ / ε

1.527

Ri mean

1.636

2V angle

Uniaxial (-)

Optical Data Luminescence

Luminescence

phosphoreszierend fluoreszierend

Color LW-UV (365nm)

 

orange

Color SW-UV (254nm)

 

rot

SW-UV Other Colors

 

violettrosa

Most Common Activator

Mn2+

Afterglow (Persistant Luminescence)

keine Daten

Crystallography

Crystal System

trigonal

Class (H-M)

3

Space Group number

148

Space Group

R3

Cell parameters a (Å)

18.28

Cell parameters b (Å)

-

Cell parameters c (Å)

8.67

Cell parameters a/b or c/a

0.474

Cell parameters c/b

-

Z

3

Volume (ų)

2509.008

X-Ray Powder Diffraction

4.19(20),
3.92(40),
3.53(10),
3.08(100),
2.536(30),
2.127(20),
1.945(10),
1.905(20)

XRD chart Benstonite

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)

3.5

VHN (Hardness Vickers)

130 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

3.596 - 3.66 / Durchschnittlich = 3.62

3.607 ( ρ calc. Mineralienatlas )

Instability

+++ Säuren

Preface

Author (Name, Year)

Lippmann, 1962

References

American Mineralogist 47 (1962), 585

Other languages

German

Benstonit

Spanish

Benstonita

English

Benstonite

French

Benstonite

Russian

Бенстонит

Simplified Chinese

菱碱土矿

CNMNC symbol

Symbol

Ben

Locations with GPS information

IDs

GUSID (Global unique identifier short form) 1DJj28V9uE2On3R5ISlX7g
GUID (Global unique identifier) DB6332D4-7DC5-4DB8-8E9F-7479212957EE
Database ID 356