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Paralstonite

Pictures (1 Images total)

Paralstonit auf Witherit
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Paralstonit auf Witherit
weißer krustiger Paralstonit auf Witherit; Größe: ca. 80 mm; Fundort: Minerva No. 1 Mine, Cave-in-Rock, Hardin Co., Illinois, USA
Copyright: Alan Goldstein; Contribution: Mineralienatlas
Location: USA/Illinois/Hardin Co./Illinois-Kentucky Fluorspar District/Cave-in-Rock Sub-District/Cave-in-Rock
Mineral: Paralstonite
Image: 1107218696
Rating: 4.67 (votes: 3)
License: Usage for Mineralienatlas project only
Paralstonit auf Witherit

weißer krustiger Paralstonit auf Witherit; Größe: ca. 80 mm; Fundort: Minerva No. 1 Mine, Cave-in-Rock, Hardin Co., Illinois, USA

Copyright: Alan Goldstein
Contribution: Mineralienatlas 2005-02-01
Locality: Cave-in-Rock / Cave-in-Rock Sub-District / Illinois-Kentucky Fluorspar District / Hardin Co. / Illinois / USA

Collectors Summary

Color farblos, weiß
Streak color weiß
Hardness (Mohs) 4.25
Solubility +++ Säuren
Crystal System trigonal, P321

Chemism

Chemical formula

BaCa(CO3)2

Chemical composition

Barium, Calcium, Kohlenstoff, Sauerstoff

Unit weight: 297.42424 u; Number of atoms in the formula: 10

Info

Empirical formula:

BaCa(CO3)2

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Carbon

C

8.08

2

20.00

12.0107800

24.0215600

Oxygen

O

32.28

6

60.00

15.9994300

95.9965800

Calcium

Ca

13.48

1

10.00

40.0784000

40.0784000

Barium

Ba

46.17

1

10.00

137.3277000

137.3277000

Analysis wt%

BaO : 45.60, SrO : 5.20, CaO : 18.80, CO2 : 30.00 (Ref: GSCP78)

Strunz 9th edition incl. updates

5.AB.40

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

Lapis Classification

V/B.04-070

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

Classification by Hölzel

5.AB.365

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

Dana 8th edition

14.02.02.02

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

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

Optical Properties

Color

farblos, weiß

Streak color

weiß

Diaphaneity (Transparency)

transparent bis durchscheinend

max. Birefringence

0.145

Birefringence chart\! Paralstonite title=Birefringence chart Paralstonite

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

1.672

RI value γ / ε

1.527

Ri mean

1.624

2V angle

Uniaxial (-)

Optical Data Luminescence

Color SW-UV (254nm)

 

orange

Afterglow (Persistant Luminescence)

keine Daten

Crystallography

Crystal System

trigonal

Class (H-M)

32

Space Group number

150

Space Group

P321

Cell parameters a (Å)

8.692

Cell parameters b (Å)

-

Cell parameters c (Å)

6.148

Cell parameters a/b or c/a

0.707

Cell parameters c/b

-

Z

3

Volume (ų)

402.257

X-Ray Powder Diffraction

6.15(20),
4.35(10),
3.550(100),
2.851(10),
2.510(70),
2.048(20),
1.943(20),
1.853(10)

XRD chart Paralstonite

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)

4.25

VHN (Hardness Vickers)

230 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

3.6

3.683 ( ρ calc. Mineralienatlas )

Instability

+++ Säuren

Preface

Author (Name, Year)

Roberts, 1979

References

Geological Survey of Canada, Paper 79-1C (1979), 99

Other languages

German

Paralstonit

Spanish

Paralstonita

English

Paralstonite

French

Paralstonite

Russian

Паральстонит

Japanese

パララストーン石

CNMNC (IMA)-Number

IMA 1979-015

CNMNC symbol

Symbol

Pasn

Locations with GPS information

IDs

GUSID (Global unique identifier short form) yfOP3IMV40iTH5DD3yS4Ng
GUID (Global unique identifier) DC8FF3C9-1583-48E3-931F-90C3DF24B836
Database ID 2926