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Cronusite

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Cronusit
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Cronusit

Anschliff einer Probe von Cronusit, Norton County Meteorit (Fall 18.02.1948), Kansas, USA; BB 5 mm, analysiert mittels elektronoptischen Methoden

Copyright: MinTreasure.com (Carsten Slotta)
Contribution: openpit 2021-05-13
Locality: Norton County Meteorit / Norton Co. / Kansas / USA

Collectors Summary

Color pechschwarz
Streak color schwarz
Lustre Halbmetallglanz
Hardness (Mohs) 1.5
Cleavages vollkommen {001}
Fracture uneben
Crystal System trigonal, R3m, R32, R3m

Chemism

Chem­ical formula

Ca0.2CrS2·H2O

Chem­ical com­po­si­tion

Calcium, Chrom, Sauerstoff, Schwefel, Wasserstoff

Unit weight: 142.158164 u; Number of atoms in the formula: 6.2

Info

Empirical formula:

Ca0.2CrS2·H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

1.42

2

32.26

1.0079470

2.0158940

Oxygen

O

11.25

1

16.13

15.9994300

15.9994300

Sulfur

S

45.11

2

32.26

32.0655000

64.1310000

Calcium

Ca

5.64

0.2

3.23

40.0784000

8.0156800

Chromium

Cr

36.58

1

16.13

51.9961600

51.9961600

Strunz 9th edi­tion incl. updates

2.FB.05

2: Sulfide und Sulfosalze (Sulfide, Selenide, Telluride, Arsenide, Antimonide, Bismutide, Sulfarsenite, Sulfantimonite, Sulfbismuthite)
F: Sulfide, Arsenide, Alkaide; Sulfide mit Halogeniden, Oxiden, Hydroxiden (H2O)
B: mit Alkaiden (ohne Cl, usw.)
05:Caswellsilverit-Gruppe

Lapis Clas­sifica­tion

II/F.08-030

II: SULFIDE UND SULFOSALZE (Sulfide, Selenide, Telluride, Arsenide, Antimonide, Bismutide)
F: Sulfide mit nichtmetallischem Charakter
8: Alkalisulfide

Clas­sifica­tion by Hölzel

2.KC.395

2: SULFIDES
K: Nonmetallic Sulfides, HalideSulfides, etc.
C: With O,OH,H2O
3: With Water

Dana 8th edi­tion

02.09.17.03

02: Sulfide Minerals
09: Sulfides - Including Selenides and Tellurides where Am Bn Xp, with (m+n):p=1:1
17: Caswellsilverite Group

IMA sta­tus

Anerkannt von der CNMNC

Min­eral sta­tus

anerkanntes Mineral

Optical Properties

Color

pechschwarz

Streak color

schwarz

Change in color

in reflektiertem Licht grau

Diaphane­ity (Trans­parency)

undurchsichtig

Lus­tre

Halbmetallglanz

Pleochro­ism

in Graustufen

Bireflectance

stark

Anisotropism

stark, in Graustufen

Reflec­tiv­ity: (Lambda nm) ↓, ↑, Ø

(440) 14.20, 15.40, 14.80
(460) 14.50, 15.80, 15.15
(480) 14.70, 16.40, 15.55
(500) 15.00, 16.80, 15.90
(520) 15.40, 17.20, 16.30
(540) 15.70, 17.60, 16.65
(560) 15.90, 17.90, 16.90
(580) 16.20, 18.20, 17.20
(600) 16.40, 18.40, 17.40
(620) 16.50, 18.50, 17.50
(640) 16.60, 18.60, 17.60
(660) 16.60, 18.60, 17.60
(680) 16.70, 18.60, 17.65
(700) 16.80, 18.70, 17.75

Reflection chart Cronusite

Reflec­tiv­ity Ø

16.71

Optical Data Luminescence

Lumi­nes­cence

keine Fluoreszenz bekannt

Crystallography

Crystal Sys­tem

trigonal

Class (H-M)

3m, 32, 3m

Space Group number

160, 155, 166

Space Group

R3m, R32, R3m

Cell param­e­ters a (Å)

3.326

Cell param­e­ters b (Å)

-

Cell param­e­ters c (Å)

33.29

Cell param­e­ters a/b or c/a

10.009

Cell param­e­ters c/b

-

Z

3

Volumne (ų)

318.925

X-Ray Pow­der Diffrac­tion

11.1(100),
5.56(10),
3.700(10),
2.719(10),
2.464(10),
2.180(50),
2.180(10)

XRD chart Cronusite

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

Crystals 3D

Open larger view

Physical Properties

Hard­ness (Mohs)

1.5

VHN (Hard­ness Vick­ers)

98 (10g)

Density (g/cm³)

2.51 (gemessen)

2.22 ( ρ calc. Mineralienatlas )

Cleav­ages

vollkommen {001}

Frac­ture

uneben

Tenac­ity

schneidbar

(Co-)Type locality

(Co-)Type locality

USA/Kansas/Norton Co./Norton County Meteorit

Preface

Asso­cia­tions

Alabandin, Daubreelith, Troilit, Enstatit

Name from

Cronus, Sohn von Uranus und Gea aus der griechischen Mythologie. Der Name bezieht sich auf den irdischen und meteorischen Ursprung von Cronusit.

Author (Name, Year)

Britvin & Guo & Kolomenskiy & Boldyreva & Kretser & Yagovkina, 2001

References

Zapiski Vserossiskogo Mineralogicheskogo Obshchetstva 130 (2001) (3), 29

Related minerals "Strunz Classification" (9. Edition) [Mineral | Chemical formula | Crystal system : Class (H-M) : Space Group | Indenture number]

Cronusite

Ca0.2CrS2·H2O

trigonal : 3m, 32, 3m : R3m, R32, R3m

2.FB.05

Schöllhornite

Na0.3CrS2·H2O

2.FB.05

Caswellsilverite

NaCrS2

trigonal : 3m : R3m

2.FB.05

Related minerals "Lapis Classification" [Mineral | Chemical formula | Crystal system : Class (H-M) : Space Group | Indenture number]

Dzierżanowskite

CaCu2S2

trigonal : 3m : P3m1

II/F.08-005

Caswellsilverite

NaCrS2

trigonal : 3m : R3m

II/F.08-010

Schöllhornite

Na0.3CrS2·H2O

II/F.08-020

Cronusite

Ca0.2CrS2·H2O

trigonal : 3m, 32, 3m : R3m, R32, R3m

II/F.08-030

Related minerals "Hoelzel Classification" [Mineral | Chemical formula : Crystal system : Class (H-M) | Space Group | Indenture number]

Erdite

NaFeS2·2H2O

monoklin : 2/m : C2/c

2.KC.300

Coyoteite

NaFe3S5·2H2O

triklin : 1, 1 : P1, P1

2.KC.320

Orickite

CuFeS2·nH2O

2.KC.350

Wilhelmramsayite

Cu3FeS3·2H2O

orthorhombisch : mmm : Pmmm

2.KC.360

Schöllhornite

Na0.3CrS2·H2O

2.KC.390

Cronusite

Ca0.2CrS2·H2O

trigonal : 3m, 32, 3m : R3m, R32, R3m

2.KC.395

Related minerals "Dana 8. Classification" [Mineral | Chemical formula : Crystal system : Class (H-M) | Space Group | Indenture number]

Teallite

PbSnS2

orthorhombisch : mmm : Pbnm

02.09.10.01

Rasvumite

KFe2S3

orthorhombisch : mmm : Cmcm

02.09.11.01

Pautovite

CsFe2S3

orthorhombisch : mmm : Cmcm

02.09.11.02

Sternbergite

AgFe2S3

orthorhombisch : mmm : Ccmb

02.09.12.01

Picotpaulite

TlFe2S3

orthorhombisch : 222, mm2, mmm : C222, Cmm2, Amm2, Cmmm

02.09.12.02

Cubanite

CuFe2S3

orthorhombisch : mmm : Pcmn

02.09.13.01

Argentopyrite

AgFe2S3

orthorhombisch : mmm : Pmmn

02.09.13.02

Isocubanite

CuFe2S3

kubisch : 43m : P43m

02.09.13.03

Catamarcaite

Cu6GeWS8

hexagonal : 6mm : P63mc

02.09.14.02

Nukundamite

(Cu,Fe)4S4

trigonal : 3m : P3m1

02.09.15.01

Mohite

Cu2SnS3

monoklin : m : Cc

02.09.16.01

Caswellsilverite

NaCrS2

trigonal : 3m : R3m

02.09.17.01

Schöllhornite

Na0.3CrS2·H2O

02.09.17.02

Cronusite

Ca0.2CrS2·H2O

trigonal : 3m, 32, 3m : R3m, R32, R3m

02.09.17.03

Petrukite

(Cu,Ag)2(Fe,Zn)(Sn,In)S4

orthorhombisch : mm2 : Pmn21

02.09.18.01

Bartonite

K6Fe20S26S

tetragonal : 4/mmm : I4/mmm

02.09.19.01

Chlorbartonite

K6Fe24S26(Cl,S)

tetragonal : 4/mmm : I4/mmm

02.09.19.02

Other languages

German

Cronusit

Spanish

Cronusita

English

Cronusite

French

Cronusite

Russian

Кроносит

Traditional Chinese

硫鈣水鉻礦

Simplified Chinese

硫钙水铬矿

CNMNC (IMA)-Number

IMA 1999-018

CNMNC symbol

Symbol

Cnu

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

German pages

DeWikiPedia - search for: Cronusit
Google-Bilder-Suche - search for: Cronusit
Mineralogisch-Petrographisches-Institut Hamburg - search for: Cronusit

English pages

Mindat - search for: Cronusite
Webmineral - search for:Cronusite
Handbook-of-Mineralogy - search for: Cronusite
RRUFF - Raman, XRD and other mineral data - search for: Cronusite
RRUFF - References and PDF downloads - search for: Cronusite
American-Mineralogist-Crystal-Structure-Database - search for: Cronusite
Athena - search for: Cronusite
Strahlen.org - search for: Cronusite
Mineralienatls.de (Forum) - search for: Cronusit

Russian pages

Webmineral.ru - search for: Кроносит

Mineral Dealer

German pages

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