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Hodgkinsonite

Pictures (4 Images total)

Hodgkinsonit
Views (Image: 1307227769): 779
Hodgkinsonit

Bildbreite: 20 mm; Fundort: Franklin, Franklin Mining District, Sussex Co., New Jersey, USA

Collection: Terry Szenics
Copyright: Rock Currier
Contribution: slugslayer 2011-06-05
Locality: Franklin / Franklin Mining District / Sussex Co. / New Jersey / USA
Hodgkinsonit
Views (Image: 1307227832): 667
Hodgkinsonit

Größe: 40 mm; Fundort: Franklin, Franklin Mining District, Sussex Co., New Jersey, USA

Collection: Ewald Gerstmann
Copyright: Rock Currier
Contribution: slugslayer 2011-06-05
Locality: Franklin / Franklin Mining District / Sussex Co. / New Jersey / USA
Hodgkinsonit
Views (Image: 1274606440): 660
Hodgkinsonit

Bildbreite: ca. 0,5 cm, Fundort: Sterling Mine, Franklin, New Jersey, USA

Copyright: Rob Lavinsky
Contribution: thdun5 2010-05-23
Locality: Sterling Mine / Sterling Hill / Ogdensburg / Franklin Mining District / Sussex Co. / New Jersey / USA
Hodgkinsonit
Views (Image: 1274613358): 728
Hodgkinsonit

Bildbreite: 1,7 mm, Fundort: Sterling Mine, Franklin, New Jersey, USA

Copyright: Public Domain
Contribution: thdun5 2010-05-23
Locality: Sterling Mine / Sterling Hill / Ogdensburg / Franklin Mining District / Sussex Co. / New Jersey / USA

Collectors Summary

Color hellrosa, orange, rötlichbraun
Hardness (Mohs) 4.75
Solubility ++ Säuren
Crystal System monoklin, P21/a

Chemism

Chem­ical formula

Zn2Mn2+SiO4(OH)2

Chem­ical com­po­si­tion

Mangan, Silicium, Zink, Sauerstoff, Wasserstoff

Unit weight: 311.8548539 u; Number of atoms in the formula: 12

Info

Empirical formula:

Zn2MnSiO4(OH)2

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

0.65

2

16.67

1.0079470

2.0158940

Oxygen

O

30.78

6

50.00

15.9994300

95.9965800

Silicon

Si

9.01

1

8.33

28.0855300

28.0855300

Manganese

Mn

17.62

1

8.33

54.9380499

54.9380499

Zinc

Zn

41.95

2

16.67

65.4094000

130.8188000

Anal­y­sis wt%

SiO2 : 19.14, FeO : 0.77, MgO : 0.52, CaO : 0.60, MnO : 22.70, ZnO : 50.45, H2O : 5.40 (Ref: Mineralogical Record 82)

Strunz 9th edi­tion incl. updates

9.AE.20

9: Silikate (Germanate)
A: Inselsilikate (Nesosilikate)
E: Insel(Neso)silikate mit zusätzlichem (O,OH,F,H2O); Kationen in tetrahedralrt [4] und meist größerer Koordination
20:Hodgkinsonit-Gruppe

Lapis Clas­sifica­tion

VIII/B.01-020

VIII: SILIKATE
B: Inselsilikate mit tetraederfremden Anionen
1: Kationen in tetraedrischer oder oktaedrischer Koordination [4/6]

Clas­sifica­tion by Hölzel

9.AI.180

9: SILICATES
A: Nesosilicates
I: Nesosilicates with OH
1: C small; Beryllite-Euclase-Topaz-Group

Dana 8th edi­tion

52.02.01.03

52: Nesosilicates Nesosilicate Insular SiO4 Groups and O, OH, F, and H2O
02: Nesosilicates Nesosilicate Insular SiO4 Groups and O, OH, F, and H2O with cations in [4] and >[4] coordination
01: Euclase group

IMA sta­tus

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

Min­eral sta­tus

anerkanntes Mineral

Optical Properties

Color

hellrosa, orange, rötlichbraun

Diaphane­ity (Trans­parency)

durchscheinend bis teilweise durchscheinend bis opak

max. Birefrin­gence

0.026

Birefringence chart\! Hodgkinsonite title=Birefringence chart Hodgkinsonite

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

1.720

RI value β

1.741

RI value γ / ε

1.746

Ri mean

1.736

2V angle

Biaxial (-) 52°

Optical Data Luminescence

Color LW-UV (365nm)

 

rot

LW-UV Intensity

schwach

After­glow (Per­sistant Lumi­nes­cence)

keine Daten

Crystallography

Crystal Sys­tem

monoklin

Class (H-M)

2/m

Space Group number

14

Space Group

P21/a

Cell param­e­ters a (Å)

11.76

Cell param­e­ters b (Å)

5.31

Cell param­e­ters c (Å)

8.17

Cell param­e­ters a/b or c/a

2.215

Cell param­e­ters c/b

1.539

Cell param­e­ters α

90°

Cell param­e­ters β

95.47

Cell param­e­ters γ

90°

Z

4

Volumne (ų)

507.857

X-Ray Pow­der Diffrac­tion

11.82(50),
3.94(30),
3.75(40),
3.64(40),
3.24(40),
3.02(30),
2.965(80),
2.869(100)

XRD chart Hodgkinsonite

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)

4.75

VHN (Hard­ness Vick­ers)

340 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

3.91

4.078 ( ρ calc. Mineralienatlas )

Insta­bil­ity

++ Säuren

Preface

Author (Name, Year)

Palache & Schaller, 1913

References

Handbook of Mineralogy (Anthony et al.), 2 (1995), 342

Other languages

German

Hodgkinsonit

Spanish

Hodgkinsonita

French

Hodgkinsonite

English

Hodgkinsonite

Russian

Годкинсонит

Russian

Ходжкинсонит

CNMNC symbol

Symbol

Hgk

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

German pages

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

English pages

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

Russian pages

Webmineral.ru - search for: Годкинсонит

Mineral Dealer

German pages

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

Locations with GPS information