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Ganomalite (Ganomalith)

Pictures (1 Images total)

Chlorargyrit, Ganomatit
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Chlorargyrit, Ganomatit
Chlorargyritkristalle begleitet von Ganomatit auf Quarz. Höhe des Chlorargyrit-Aggregates 4mm. Fundort: Niedersachsen, Harz, St.Andreasberg, Beerberg, Grube Alter Theuerdank.
Copyright: argentopyrit; Contribution: argentopyrit
Collection: argentopyrit
Location: Deutschland/Niedersachsen/Goslar, Landkreis/Braunlage/St. Andreasberg, Revier
Mineral: Chlorargyrite, Ganomalite
Image: 1361912900
Rating: 4.33 (votes: 3)
License: Usage for Mineralienatlas project only
Chlorargyrit, Ganomatit

Chlorargyritkristalle begleitet von Ganomatit auf Quarz. Höhe des Chlorargyrit-Aggregates 4mm. Fundort: Niedersachsen, Harz, St.Andreasberg, Beerberg, Grube Alter Theuerdank.

Collection: argentopyrit
Copyright: argentopyrit
Contribution: argentopyrit 2013-02-26
Locality: St. Andreasberg, Revier / Braunlage / Goslar, Landkreis / Niedersachsen / Deutschland

Collectors Summary

Color farblos, grau, weiß
Streak color weiß
Hardness (Mohs) 3
Solubility +++ HNO3, HCl
Crystal System hexagonal, P6

Chemism

Chemical formula

Pb3Ca2(SiO4)(Si2O7)

Chemical composition

Blei, Calcium, Silicium, Sauerstoff

Unit weight: 962.03712 u; Number of atoms in the formula: 19

Info

Empirical formula:

Pb3Ca2(SiO4)(Si2O7)

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Oxygen

O

18.29

11

57.89

15.9994300

175.9937300

Silicon

Si

8.76

3

15.79

28.0855300

84.2565900

Calcium

Ca

8.33

2

10.53

40.0784000

80.1568000

Lead

Pb

64.62

3

15.79

207.2100000

621.6300000

Analysis wt%

SiO2 : 19.50, CaO : 11.10, PbO : 68.40, MnO : 2.40 (Ref: Mineralogical Magazine 85)

Strunz 9th edition incl. updates

9.BG.25

9: Silikate (Germanate)
B: Gruppensilikate (Sorosilikate)
G: Gruppen(Soro)-Silikate mit gemischten SiO4 und Si2O7 Gruppen; Kationen in oktahedraler [6] und größerer Koordination
25:Ganomalith-Gruppe

Lapis Classification

VIII/C.27-010

VIII: SILIKATE
C: Gruppensilikate
27: Mischstrukturen mit [SiO4] 4--Inseln und [Si2O7] 6--Gruppen

Classification by Hölzel

9.BN.840

9: SILICATES
B: Sorosilicates
N: With SiO4 + Si2O7
8: Not classified

Dana 8th edition

78.02.01.01

78: Unclassified Silicate Minerals
02: Unclassified silicates possible sorosilicates

IMA status

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

Mineral status

anerkanntes Mineral

Optical Properties

Color

farblos, grau, weiß

Streak color

weiß

Diaphaneity (Transparency)

durchscheinend bis transparent

max. Birefringence

0.035

Birefringence chart\! Ganomalite title=Birefringence chart Ganomalite

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

1.910

RI value γ / ε

1.945

Ri mean

1.922

2V angle

Uniaxial (+)

Optical Data Luminescence

Color SW-UV (254nm)

 

weiß

Afterglow (Persistant Luminescence)

keine Daten

Crystallography

Crystal System

hexagonal

Class (H-M)

3m

Space Group number

174

Space Group

P6

Cell parameters a (Å)

9.846

Cell parameters b (Å)

-

Cell parameters c (Å)

10.144

Cell parameters a/b or c/a

1.030

Cell parameters c/b

-

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

120°

Z

3

Volume (ų)

851.647

X-Ray Powder Diffraction

4.92(70),
4.43(70),
3.53(90),
3.38(80),
3.06(100),
2.71(70),
1.985(70),
1.797(70)

XRD chart Ganomalite

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)

3

VHN (Hardness Vickers)

83 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

5.74

5.627 ( ρ calc. Mineralienatlas )

Instability

+++ HNO3, HCl

Preface

Author (Name, Year)

Nordenskiöld, 1876

References

Handbook of Mineralogy (Anthony et al.), 2 (1995), 277

Other languages

Spanish

Ganomalita

English

Ganomalite

French

Ganomalite

German

Ganomalith

Russian

Ганомалит

Simplified Chinese

硅钙铅矿

Alternative Name

German

Ganomalit

CNMNC symbol

Symbol

Gnm

Locations with GPS information

IDs

GUSID (Global unique identifier short form) xC3gvYqH40mxAydzzVyi4g
GUID (Global unique identifier) BDE02DC4-878A-49E3-B103-2773CD5CA2E2
Database ID 1329