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Winchite

Pictures (5 Images total)

Winchit
Views (Image: 1231875358): 1783
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 (Image: 1105878100): 1795
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 (Image: 1231875415): 1762
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 (Image: 1231875485): 1439
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 (Image: 1231875681): 1346
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

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

German pages

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

English pages

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

Russian pages

 Webmineral.ru - search for: Винчит

Mineral Dealer

German pages

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

Locations with GPS information