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Cerchiaraite-(Fe) (Cerchiarait-(Fe))

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Cerchiarait-(Fe)
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Cerchiarait-(Fe)
hellgelbe nadelige Kristalle von Cerchiarait-(Fe), Cerchiara Mine, Borghetto Vara, Vara-Tal, La Spezia Provinz, Ligurien, Italien; BB ~ 3 mm
Copyright: MinTreasure.com (Carsten Slotta); Contribution: openpit
Location: Italien/Ligurien (Liguria), Region/La Spezia, Provinz/Vara-Tal/Cerchiara Mine
Mineral: Cerchiaraite-(Fe)
Image: 1587407984
License: Usage for Mineralienatlas project only
Cerchiarait-(Fe)

hellgelbe nadelige Kristalle von Cerchiarait-(Fe), Cerchiara Mine, Borghetto Vara, Vara-Tal, La Spezia Provinz, Ligurien, Italien; BB 3 mm

Copyright: MinTreasure.com (Carsten Slotta)
Contribution: openpit 2020-04-20
Locality: Cerchiara Mine / Vara-Tal / La Spezia, Provinz / Ligurien (Liguria), Region / Italien

Collectors Summary

Color gelbbraunm blau, bläulichgrün
Streak color gelblichweiß
Lustre Glasglanz
Hardness (Mohs) 4.5
Cleavages fehlt
Crystal System tetragonal, I4/mmm

Chemism

Chemical formula

Ba4Fe3+4O3(OH)3(Si4O12)[Si2O3(OH)4]Cl

Additional chem. information

Fe Analog von Cerchiarait

Chemical composition

Barium, Chlor, Eisen, Silicium, Sauerstoff, Wasserstoff

Unit weight: 1383.699359 u; Number of atoms in the formula: 47

Info

Empirical formula:

Ba4Fe4O3(OH)3(Si4O12)[Si2O3(OH)4]Cl

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

0.51

7

14.89

1.0079470

7.0556290

Oxygen

O

28.91

25

53.19

15.9994300

399.9857500

Silicon

Si

12.18

6

12.77

28.0855300

168.5131800

Chlorine

Cl

2.56

1

2.13

35.4532000

35.4532000

Iron

Fe

16.14

4

8.51

55.8452000

223.3808000

Barium

Ba

39.70

4

8.51

137.3277000

549.3108000

Strunz 9th edition incl. updates

9.CF.25

9: Silikate (Germanate)
C: Ringsilikate (Cyclosilikate)
F: ~[Si4O12]8- vierer-Einfachringe, ohne inselart, komplexe [Anionen]
25:Cerchiarait-Gruppe

Lapis Classification

VIII/E.08-014

VIII: SILIKATE
E: Ringsilikate
8: Viererringe [Si4O12] 8-; Joaquinit-Gruppe und Verwandte

Classification by Hölzel

9.CB.244

9: SILICATES
C: Cyclosilicates
B: ~[Si4O12]8-, ~[Si4O10]4--Rings
2: Taramellite-Group

IMA status

anerkannt - Mai 2012 - CNMNC Newsletter No. 13, June 2012, page 808; Mineralogical Magazine, 76, 807-817

Mineral status

anerkanntes Mineral

Optical Properties

Color

gelbbraunm blau, bläulichgrün

Streak color

gelblichweiß

Lustre

Glasglanz

Crystallography

Crystal System

tetragonal

Class (H-M)

4/mmm

Space Group number

139

Space Group

I4/mmm

Cell parameters a (Å)

14.335

Cell parameters b (Å)

-

Cell parameters c (Å)

6.015

Cell parameters a/b or c/a

0.420

Cell parameters c/b

-

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

90°

Z

2

Volume (ų)

1236.036

Crystal structure

Struktur bestimmt

X-Ray Powder Diffraction

4.403(26), 3.327(48), 3.016(70), 2.595(100), 2.258(29), 1.812(39), 1.411(43), 1.298(29)

XRD chart Cerchiaraite-(Fe)

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)

4.5

Density (g/cm³)

3.71

3.718 ( ρ calc. Mineralienatlas )

Cleavages

fehlt

(Co-)Type locality

(Co-)Type locality

Italien/Ligurien (Liguria), Region/La Spezia, Provinz/Vara-Tal/Cerchiara Mine

USA/Kalifornien (California)/Fresno Co./Big Creek/Esquire No. 7 Claim

USA/Kalifornien (California)/Fresno Co./Big Creek/Esquire No. 8 Claim

Type material

Natural History Museum of Los Angeles County, Los Angeles, California, USA

Collection number of type material

63515, 63516, 63517, 63518

Preface

Author (Name, Year)

Anthony R. Kampf, Andrew C. Roberts, Katherine E. Venance, Cristina Carbone, Gail E. Dunning, und Robert E. Walstrom (2012)

References

CNMNC Newsletter No. 13, June 2012, page 808; Mineralogical Magazine, 76, 807-817

Other languages

German

Cerchiarait-(Fe)

English

Cerchiaraite-(Fe)

Russian

Черкьяраит-(Fe)

CNMNC (IMA)-Number

IMA 2012-012

CNMNC symbol

Symbol

Ccr-Fe

Locations with GPS information

IDs

GUSID (Global unique identifier short form) tClU28l57UWiKtwRLEM5FA
GUID (Global unique identifier) DB5429B4-79C9-45ED-A22A-DC112C433914
Database ID 7405