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Wiserite

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Wiserit
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Wiserit
Gonzen; Sarganserland, St. Gallen, Kanton; Schweiz. Ca.5x5cm.
Copyright: Doc Diether; Contribution: Doc Diether
Collection: Naturmuseum St. Gallen
Location: Schweiz/St. Gallen, Kanton/Sarganserland, Kreis/Sargans/Eisenbergwerk Gonzen
Mineral: Wiserite
Image: 1496255843
Rating: 3 (votes: 1)
License: Usage for Mineralienatlas project only
Wiserit

Gonzen; Sarganserland, St. Gallen, Kanton; Schweiz. Ca.5x5cm.

Collection: Naturmuseum St. Gallen
Copyright: Doc Diether
Contribution: Doc Diether 2017-05-31
Locality: Eisenbergwerk Gonzen / Sargans / Sarganserland, Kreis / St. Gallen, Kanton / Schweiz

Collectors Summary

Color bräunlich
Streak color weiß
Lustre Glasglanz
Hardness (Mohs) 3.5
Solubility +++ Säuren
Crystal System tetragonal, P4/n

Chemism

Chemical formula

Mn2+14(B2O5)4(OH)8·(Si,Mg)(O,OH)4Cl

Chemical composition

Chlor, Magnesium, Mangan, Silicium, Bor, Sauerstoff, Wasserstoff

Unit weight: 1439.2731941 u; Number of atoms in the formula: 65

Info

Empirical formula:

Mn14(B2O5)4(OH)8·(Si0.75Mg0.25)(O0.75(OH)0.25)4Cl

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

0.63

9

13.85

1.0079470

9.0715230

Boron

B

6.01

8

12.31

10.8117000

86.4936000

Oxygen

O

35.57

32

49.23

15.9994300

511.9817600

Magnesium

Mg

0.42

0.25

0.38

24.3050600

6.0762650

Silicon

Si

1.46

0.75

1.15

28.0855300

21.0641475

Chlorine

Cl

2.46

1

1.54

35.4532000

35.4532000

Manganese

Mn

53.44

14

21.54

54.9380499

769.1326986

Analysis wt%

MnO : 64.30, MgO : 4.90, SiO2 : 2.00, B2O3 : 17.50, H2O : 7.00, Cl : 2.10 (Ref: American Mineralogist 89)

Strunz 9th edition incl. updates

6.BA.20

6: Borate
B: Diborate
A: Insel (Neso)-Diborate mit Doppel-Triangeln B2(O,OH)5;2(2Δ); 2(2Δ) + OH, etc.
20:Wiserit-Gruppe

Lapis Classification

V/H.03-010

V: NITRATE, CARBONATE UND BORATE
H: Gruppenborate
3: Planare Gruppen [B2O5] 4- bis [B2O7] 8-

Classification by Hölzel

6.BA.260

6: Borates
B: Diborates
A: Nesodiborates with double triangles B2(O,OH)5 - 2(2P) - 2(2P)+OH, etc.
2: Szaibelyite-Group (homeotypes)

Dana 8th edition

27.01.10.01

27: Compound Borates
01: Compound Borates

IMA status

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

Mineral status

anerkanntes Mineral

Optical Properties

Color

bräunlich

Streak color

weiß

Diaphaneity (Transparency)

transparent

Lustre

Glasglanz

max. Birefringence

0.051

Birefringence chart\! Wiserite title=Birefringence chart Wiserite

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

1.751 - 1.753

RI value γ / ε

1.700 - 1.715

Ri mean

1.732

2V angle

Uniaxial (-)

Pleochroism

O = farblos zu leuchtend orangebraun; E = leuchtend zu dunkel orangebraun

Crystallography

Crystal System

tetragonal

Class (H-M)

4/m

Space Group number

85

Space Group

P4/n

Cell parameters a (Å)

20.192

Cell parameters b (Å)

-

Cell parameters c (Å)

3.281

Cell parameters a/b or c/a

0.162

Cell parameters c/b

-

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

90°

Z

2

Volumne (ų)

1337.719

X-Ray Powder Diffraction

14.5(100),
10.14(30),
6.40(80),
3.365(40),
2.854(30),
2.654(80),
2.522(70),
1.718(30)

XRD chart Wiserite

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)

3.5

VHN (Hardness Vickers)

53 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

3.54 (gemessen)

3.573 ( ρ calc. Mineralienatlas )

Instability

+++ Säuren

(Co-)Type locality

(Co-)Type locality

Schweiz/St. Gallen, Kanton/Sarganserland, Kreis/Sargans/Eisenbergwerk Gonzen

Type material

Federal Institute of Technology, Zurich, Schweiz

Harvard University, Cambridge, Massachusetts, USA

National Museum of Natural History, Washington, D.C., USA

Collection number of type material

194501 (Zürich); 126918 (Cambridge); 163804, 163341 (Washington)

Preface

Name from

David Friedrich Wiser (1802–1878), Schweizer Kaufmann und Mineraloge

Author (Name, Year)

Haidinger, 1845

References

American Mineralogist 74 (1989), 1374

Handbuch der Bestimmenden Mineralogie. Braumüller and Seidel, Wien (1845), 493

Other languages

German

Wiserit

Spanish

Wiserita

English

Wiserite

French

Wiserite

Russian

Визерит

CNMNC symbol

Symbol

Wis

Locations with GPS information