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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 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

Volumne (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

Automatic Links to external internet sources (Responsibility is with the operator)

German pages

DeWikiPedia - search for: Paralstonit
Google-Bilder-Suche - search for: Paralstonit
Mineralienatlas.de (Forum) - search for: Paralstonit

English pages

Mindat - search for: Paralstonite
Webmineral - search for:Paralstonite
Handbook-of-Mineralogy - search for: Paralstonite
RRUFF - Raman, XRD and other mineral data - search for: Paralstonite
RRUFF - References and PDF downloads - search for: Paralstonite
American-Mineralogist-Crystal-Structure-Database - search for: Paralstonite
Strahlen.org - search for: Paralstonite

Russian pages

Webmineral.ru - search for: Паральстонит

Mineral Dealer

German pages

hausen - Mineralgroßhandel - search for: Paralstonit
Crystal-Treasure.com - search for: Paralstonit
Bosse - search for: Paralstonit
Edelsteine Neuburg - Gundolf Fischer - search for: Paralstonit

Locations with GPS information