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Glaucochroite

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Glaukochroit
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Glaukochroit

Glaukochroit (rosafarben), Willemit (grünlich) und Franklinit (schwarz). Franklin Mining District, Sussex County, New Jersey, USA.

Copyright: Public Domain
Contribution: Collector 2011-02-21
Locality: Franklin Mining District / Sussex Co. / New Jersey / USA

Collectors Summary

Color bläulichgrün
Streak color weiß
Hardness (Mohs) 6
Solubility +++ HCl
Crystal System orthorhombisch, Pbnm

Chemism

Chem­ical formula

CaMnSiO4

Chem­ical com­po­si­tion

Calcium, Mangan, Silicium, Sauerstoff

Unit weight: 187.0996999 u; Number of atoms in the formula: 7

Info

Empirical formula:

CaMnSiO4

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Oxygen

O

34.21

4

57.14

15.9994300

63.9977200

Silicon

Si

15.01

1

14.29

28.0855300

28.0855300

Calcium

Ca

21.42

1

14.29

40.0784000

40.0784000

Manganese

Mn

29.36

1

14.29

54.9380499

54.9380499

Anal­y­sis wt%

SiO2 : 32.30, MgO : 0.40, CaO : 28.50, ZnO : 1.90, MnO : 37.00 (Ref: American Mineralogist 87)

Strunz 9th edi­tion incl. updates

9.AC.05

9: Silikate (Germanate)
A: Inselsilikate (Nesosilikate)
C: Insel(Neso)silikate ohne weitere Anionen; Kationen in oktahedraler [6] Koordination
05:Olivin-Gruppe

Lapis Clas­sifica­tion

VIII/A.05-030

VIII: SILIKATE
A: Inselsilikate mit [SiO4] 4--Baugruppen
5: Kationen in oktaedrischer Koordination [6]

Clas­sifica­tion by Hölzel

9.AB.180

9: SILICATES
A: Nesosilicates
B: Olivine-Group

Dana 8th edi­tion

51.03.02.03

51: Nesosilicate Minerals
03: Nesosilicates Nesosilicate Insular SiO4 Groups Only with all cations in octahedral [6] coordination
02: Monticellite - Kirschsteinite series

IMA sta­tus

Erstbeschreibung vor CNMNC-Gründung (1959), als Mineral meist anerkannt

Min­eral sta­tus

anerkanntes Mineral

Optical Properties

Color

bläulichgrün

Streak color

weiß

max. Birefrin­gence

0.051

Birefringence chart\! Glaucochroite title=Birefringence chart Glaucochroite

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

1.685

RI value β

1.723

RI value γ / ε

1.736

Ri mean

1.715

2V angle

Biaxial (-) 61°

Crystallography

Crystal Sys­tem

orthorhombisch

Class (H-M)

mmm

Space Group number

62

Space Group

Pbnm

Cell param­e­ters a (Å)

4.92

Cell param­e­ters b (Å)

11.14

Cell param­e­ters c (Å)

6.50

Cell param­e­ters a/b or c/a

0.442

Cell param­e­ters c/b

0.583

Cell param­e­ters α

90°

Cell param­e­ters β

90°

Cell param­e­ters γ

90°

Z

4

Volumne (ų)

356.257

X-Ray Pow­der Diffrac­tion

4.23(40),
3.69(60),
2.96(60),
2.69(80),
2.63(80),
1.85(100),
1.13(50),
1.11(50)

XRD chart Glaucochroite

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)

6

VHN (Hard­ness Vick­ers)

730 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

3.48 (gemessen)

3.488 ( ρ calc. Mineralienatlas )

Insta­bil­ity

+++ HCl

Preface

Author (Name, Year)

Penfield & Warren, 1899

References

Handbook of Mineralogy (Anthony et al.), 2 (1995), 291

Other languages

English

Glaucochroite

French

Glaucochroite

Spanish

Glaucocroíta

German

Glaukochroit

Russian

Глаукохроит

Alternative Name

German

Calcotephroit

Spanish

Calcotephroita

Calcotephroite

Glauchchroite

German

Glaucochroit

Spanish

Glaucochroita

CNMNC symbol

Symbol

Glc

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

German pages

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

English pages

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

Russian pages

Webmineral.ru - search for: Глаукохроит

Mineral Dealer

German pages

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

Locations with GPS information