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Lazarenkoite (Lazarenkoit)

Pictures (2 Images total)

Lazarenkoit
Views (File:
1300971576
): 1453
Lazarenkoit
Gelber Lazarenkoit auf Löllingit vom Steinbruch Bärenstein, Bad Harzburg, Harz, Niedersachsen, Deutschland. Bildbreite: 2 mm.
Copyright: raritätenjäger; Contribution: raritätenjäger
Collection: raritätenjäger
Location: Deutschland/Niedersachsen/Goslar, Landkreis/Bad Harzburg/Radautal/Gabbrosteinbruch (Bärensteinbruch)
Mineral: Lazarenkoite
Image: 1300971576
License: Usage for Mineralienatlas project only
Lazarenkoit

Gelber Lazarenkoit auf Löllingit vom Steinbruch Bärenstein, Bad Harzburg, Harz, Niedersachsen, Deutschland. Bildbreite: 2 mm.

Collection: raritätenjäger
Copyright: raritätenjäger
Contribution: raritätenjäger 2011-03-24
Locality: Gabbrosteinbruch (Bärensteinbruch) / Radautal / Bad Harzburg / Goslar, Landkreis / Niedersachsen / Deutschland
Lazarenkoit
Views (File:
1399295436
): 1049
Lazarenkoit
ein Rasen aus winzigen ca. 0,2mm großen Lazarenkoitkristallen. Deutschland/Niedersachsen/Goslar, Landkreis/Bad Harzburg/Gabbrosteinbruch (Bärensteinbruch)
Copyright: Harzsammler; Contribution: Harzsammler
Collection: Harzsammler
Location: Deutschland/Niedersachsen/Goslar, Landkreis/Bad Harzburg/Radautal/Gabbrosteinbruch (Bärensteinbruch)
Mineral: Lazarenkoite
Image: 1399295436
License: Usage for Mineralienatlas project only
Lazarenkoit

ein Rasen aus winzigen ca. 0,2mm großen Lazarenkoitkristallen. Deutschland/Niedersachsen/Goslar, Landkreis/Bad Harzburg/Gabbrosteinbruch (Bärensteinbruch)

Collection: Harzsammler
Copyright: Harzsammler
Contribution: Harzsammler 2014-05-05
Locality: Gabbrosteinbruch (Bärensteinbruch) / Radautal / Bad Harzburg / Goslar, Landkreis / Niedersachsen / Deutschland

Collectors Summary

Color hellorange
Streak color hellgelb
Hardness (Mohs) 1
Solubility +++ HCl, - H2O
Crystal System orthorhombisch,

Chemism

Chemical formula

(Ca,Fe2+)Fe3+As33+O7·3H2O

Chemical composition

Arsen, Calcium, Eisen, Sauerstoff, Wasserstoff

Unit weight: 490.672088 u; Number of atoms in the formula: 21

Info

Empirical formula:

(Ca0.75Fe0.25)FeAs3O7·3H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

1.23

6

28.57

1.0079470

6.0476820

Oxygen

O

32.61

10

47.62

15.9994300

159.9943000

Calcium

Ca

6.13

0.75

3.57

40.0784000

30.0588000

Iron

Fe

14.23

1.25

5.95

55.8452000

69.8065000

Arsenic

As

45.81

3

14.29

74.9216020

224.7648060

Analysis wt%

Ø As2O3 : 61.50, Fe2O3 : 16.70, FeO : 5.60, MgO : 0.70, CaO : 5.10, H2O : 12.20 (Ref: Mineralogicheskii Zhurnal 81)

Strunz 9th edition incl. updates

4.JC.10

4: Oxide, Hydroxide (Oxide, Hydroxide, V[5,6]-Vanadate, Arsenite, Antimonite, Bismutite, Sulfite, Selenite, Tellurite, Iodate)
J: Antimonite, Bismuthite, Sulfite, Selenite, Tellurite
C: [Arsenite], [Antimonite], [Bismuthite]; ohne zusätzlichen [Anionen], mit H20
10:Lazarenkoit-Gruppe

Lapis Classification

IV/J.08-020

IV: OXIDE
J: Arsenite (mit As3+)
8: Unklassifizierte Arsenite

Classification by Hölzel

5.JC.230

5: CARBONATES NITRATES ARSENITES SULFITES SELENITES TELLURITES IODATES
J: Arsenites
C: Arsenites (-Anions +Water)

Dana 8th edition

07.08.03.01

07: Multiple Oxides
08: Multiple Oxides where A B (O)2·x(H2O)

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

Optical Properties

Color

hellorange

Streak color

hellgelb

max. Birefringence

0.135

Birefringence chart\! Lazarenkoite title=Birefringence chart Lazarenkoite

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

1.820

RI value β

1.920

RI value γ / ε

1.955

Ri mean

1.898

2V angle

Biaxial (-) 30°

Crystallography

Crystal System

orthorhombisch

Cell parameters a (Å)

21.80

Cell parameters b (Å)

12.64

Cell parameters c (Å)

8.40

Cell parameters a/b or c/a

1.725

Cell parameters c/b

0.665

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

90°

Z

10

Volume (ų)

2314.637

X-Ray Powder Diffraction

11.20(90),
8.40(100),
6.55(80),
4.66(90),
3.31(40),
3.20(40),
3.135(40),
3.013(30)

XRD chart Lazarenkoite

Calculated from d-spacing and intensity at 0.1541838 nm (Cu)

Crystals 3D

Open larger view

Physical Properties

Hardness (Mohs)

1

Density (g/cm³)

3.45 (gemessen)

3.52 ( ρ calc. Mineralienatlas )

Instability

+++ HCl, - H2O

Preface

Author (Name, Year)

Yakhontova & Plosina, 1981

References

Mineralogicheskiy Zhurnal 3 (1981) (3), 92

Other languages

German

Lazarenkoit

French

Lazarenkoite

English

Lazarenkoite

Spanish

Lazarenkoíta

Russian

Лазаренкоит

Alternative Name

German

Lasarenkoit

CNMNC (IMA)-Number

IMA 1980-076

CNMNC symbol

Symbol

Laz

Locations with GPS information

IDs

GUSID (Global unique identifier short form) DtpH8wO_REOzucrRUhy-xQ
GUID (Global unique identifier) F347DA0E-BF03-4344-B3B9-CAD1521CBEC5
Database ID 2162