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Winchite (Winchit)

Pictures (5 Images total)

Winchit
Views (File:
1231875358
): 1873
Winchit
Fundort: Kajlidongri, Jhabua District, Madhya Pradesh, Indien; Bildbreite: 12 mm; Fund von E.J. Beer zwischen 1905 und 1920
Copyright: Pavel M. Kartashov; Contribution: slugslayer
Location: Indien/Madhya Pradesh/Jhabua, Distrikt/Kajlidongri Mine
Mineral: Winchite
Image: 1231875358
Rating: 7 (votes: 1)
License: Usage for Mineralienatlas project only
Winchit

Fundort: Kajlidongri, Jhabua District, Madhya Pradesh, Indien; Bildbreite: 12 mm; Fund von E.J. Beer zwischen 1905 und 1920
Copyright: Pavel M. Kartashov
Contribution: slugslayer 2009-01-13
Locality: Kajlidongri Mine / Jhabua, Distrikt / Madhya Pradesh / Indien
Winchit
Views (File:
1105878100
): 1860
Winchit
Rasen aus rötlich- bis bräunlichvioletten, stengeligen Aggregaten des Amphibols Winchit mit stahlgrauem Braunit; Stufengröße: 5,2 x 3,1 cm; Fundort: Tirodi, Indien
Copyright: McSchuerf; Contribution: Mineralienatlas
Collection: McSchuerf
Location: Indien/Madhya Pradesh/Balaghat, Distrikt/Tirodi
Mineral: Winchite
Image: 1105878100
Rating: 6 (votes: 1)
License: Usage for Mineralienatlas project only
Winchit

Rasen aus rötlich- bis bräunlichvioletten, stengeligen Aggregaten des Amphibols Winchit mit stahlgrauem Braunit; Stufengröße: 5,2 x 3,1 cm; Fundort: Tirodi, Indien
Collection: McSchuerf
Copyright: McSchuerf
Contribution: Mineralienatlas 2005-01-16
Locality: Tirodi / Balaghat, Distrikt / Madhya Pradesh / Indien
Winchit
Views (File:
1231875415
): 1812
Winchit
Fundort: Kajlidongri, Jhabua District, Madhya Pradesh, Indien; Bildbreite: 12 mm; Fund von E.J. Beer zwischen 1905 und 1920
Copyright: Pavel M. Kartashov; Contribution: slugslayer
Location: Indien/Madhya Pradesh/Jhabua, Distrikt/Kajlidongri Mine
Mineral: Winchite
Image: 1231875415
Rating: 6 (votes: 1)
License: Usage for Mineralienatlas project only
Winchit

Fundort: Kajlidongri, Jhabua District, Madhya Pradesh, Indien; Bildbreite: 12 mm; Fund von E.J. Beer zwischen 1905 und 1920
Copyright: Pavel M. Kartashov
Contribution: slugslayer 2009-01-13
Locality: Kajlidongri Mine / Jhabua, Distrikt / Madhya Pradesh / Indien
Winchit
Views (File:
1231875485
): 1486
Winchit
Fundort: Kajlidongri, Jhabua District, Madhya Pradesh, Indien; Bildbreite: 12 mm
Copyright: Pavel M. Kartashov; Contribution: slugslayer
Location: Indien/Madhya Pradesh/Jhabua, Distrikt/Kajlidongri Mine
Mineral: Winchite
Image: 1231875485
License: Usage for Mineralienatlas project only
Winchit

Fundort: Kajlidongri, Jhabua District, Madhya Pradesh, Indien; Bildbreite: 12 mm
Copyright: Pavel M. Kartashov
Contribution: slugslayer 2009-01-13
Locality: Kajlidongri Mine / Jhabua, Distrikt / Madhya Pradesh / Indien
Winchit
Views (File:
1231875681
): 1390
Winchit
Fundort: Kajlidongri, Jhabua District, Madhya Pradesh, Indien; Größe: 50x46x30 mm
Copyright: Rob Lavinsky; Contribution: slugslayer
Location: Indien/Madhya Pradesh/Jhabua, Distrikt/Kajlidongri Mine
Mineral: Winchite
Image: 1231875681
License: Usage for Mineralienatlas project only
Winchit

Fundort: Kajlidongri, Jhabua District, Madhya Pradesh, Indien; Größe: 50x46x30 mm
Copyright: Rob Lavinsky
Contribution: slugslayer 2009-01-13
Locality: Kajlidongri Mine / Jhabua, Distrikt / Madhya Pradesh / Indien

Collectors Summary

Color kobaltblau, blauviolett
Streak color bläulichweiß
Hardness (Mohs) 5.00 - 6.00
Crystal System monoklin, C2/m

Chemism

Chemical formula

☐NaCa(Mg,Fe2+)4AlSi8O22(OH)2

Chemical composition

Aluminium, Calcium, Eisen, Magnesium, Natrium, Silicium, Sauerstoff, Wasserstoff, Vakanz

Unit weight: 829.49654241 u; Number of atoms in the formula: 42

Info

Empirical formula:

VcNaCa(Mg0.75Fe0.25)4AlSi8O22(OH)2

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Vacancy

Vc

0.00

1

2.38

0.0000000

0.0000000
Hydrogen

H

0.24

2

4.76

1.0079470

2.0158940
Oxygen

O

46.29

24

57.14

15.9994300

383.9863200
Sodium

Na

2.77

1

2.38

22.9897702

22.9897702
Magnesium

Mg

8.79

3

7.14

24.3050600

72.9151800
Aluminium

Al

3.25

1

2.38

26.9815382

26.9815382
Silicon

Si

27.09

8

19.05

28.0855300

224.6842400
Calcium

Ca

4.83

1

2.38

40.0784000

40.0784000
Iron

Fe

6.73

1

2.38

55.8452000

55.8452000

Analysis wt%

SiO2 : 57.65, Al2O3 : 0.82, Fe2O3 : 11.35, MnO : 0.63, MgO : 17.30, CaO : 1.69, Na2O : 8.75, K2O : 0.87, H2O : 2.10 (Ref: American Mineralogist 81)

Strunz 9th edition incl. updates

9.DE.20

9: Silikate (Germanate)
D: Ketten- und Bandsilikate (Inosilikate)
E: Ketten- und Bandsilikate mit 2-periodischen Doppelketten, Si4O11; Amphibol-Familie, Klinoamphibole
20:

Lapis Classification

VIII/F.09-090

VIII: SILIKATE
F: Ketten- und Bandsilikate
9: Zweierbänder [Si4O11] 6-; Amphibol-Gruppe; Na-Ca-Amphibole

Classification by Hölzel

9.DI.200

9: SILICATES
D: Inosilicates; ~[Si2O6]4--...2-Chain
I: Amphiboles; Sodiccalcic Amphiboles
2: Winchite-Group

Dana 8th edition

66.01.03b.01

66: Inosilicates Inosilicate Double-Width Unbranched Chains, W=2
01: Inosilicates Inosilicate Double-Width Unbranched Chains, W=2 with P=2 amphibole configuration
03b: Group 3, the sodic-calcic amphiboles

IMA status

Neudefinition von der CNMNC anerkannt

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

 Amphibole supergroup  ⇒ (OH,F,Cl)-dominant amphiboles  ⇒ Sodium-calcium amphiboles  ⇒ Winchite (Win) amphiboles

Optical Properties

Color

kobaltblau, blauviolett

Streak color

bläulichweiß

max. Birefringence

0.022
Birefringence chart\! Winchite title=Birefringence chart Winchite

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

1.649

RI value β

1.655

RI value γ / ε

1.671

Ri mean

1.658

2V angle

Biaxial (-) 50°

Crystallography

Crystal System

monoklin

Class (H-M)

2/m

Space Group number

12

Space Group

C2/m

Cell parameters a (Å)

9.944

Cell parameters b (Å)

17.951

Cell parameters c (Å)

5.271

Cell parameters a/b or c/a

0.554

Cell parameters c/b

0.294

Cell parameters α

90°

Cell parameters β

104.42

Cell parameters γ

90°

Z

2

Volumne (ų)

911.257

X-Ray Powder Diffraction

8.40(90),
4.48(70),
3.40(70),
3.12(50),
2.976(40),
2.699(100),
2.575(30),
2.528(90)
XRD chart Winchite

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)

5.00 - 6.00

VHN (Hardness Vickers)

530 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

3.175 (gemessen)

3.023 ( ρ calc. Mineralienatlas )

Preface

Author (Name, Year)

Fermor, 1906

Safety Instructions

Industrial chemicals are often present in powder form and therefore often contain much higher dangers than natural, crystalline substances. These hazard statements refer to the classification of industrially used chemical compounds that may also occur in this natural mineral. The hazard classification makes no claim to completeness.




Safety classes: H350: Kann Krebs erzeugen., H372: Schädigt die Organe bei längerer oder wiederholter Exposition.

References

Canadian Mineralogist 39 (2001), 171

IMA group assignments

Other languages

German

Winchit

Spanish

Winchita

English

Winchite

French

Winchite

Russian

Винчит

Simplified Chinese

蓝透闪石

Traditional Chinese

藍透閃石

Alternative Name

English

Aluminowinchite

German

Eckrit

Spanish

Eckrita

English

Eckrite

CNMNC symbol

Symbol

Wnc

Locations with GPS information