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Ransomite (Ransomit)

Pictures (1 Images total)

Ransomit
Views (File:
1567545007
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Ransomit
Blauer Ransomit, z.T. eng verwachsen mit einem gelben Sulfatmineral (wohl Magnesiocopiapit) in einem versiegelten Glasröhrchen. Das Material entstand als Sublimationsprodukt bei einem Grubenbrand. Bildbreite ~8 mm. Fundort: United Verde Mine, Jerome, Verde Mining District, Black Hills, Yavapai Co., Arizona, USA.
Copyright: Yi Sun; Contribution: sun-mineral
Collection: Yi Sun
Location: USA/Arizona/Yavapai Co./Black Hills/Verde District/Jerome/United Verde Mine
Mineral: Ransomite
Image: 1567545007
License: Usage for Mineralienatlas project only
Ransomit

Blauer Ransomit, z.T. eng verwachsen mit einem gelben Sulfatmineral (wohl Magnesiocopiapit) in einem versiegelten Glasröhrchen. Das Material entstand als Sublimationsprodukt bei einem Grubenbrand. ...

Collection: Yi Sun
Copyright: Yi Sun
Contribution: sun-mineral 2019-09-03
Locality: United Verde Mine / Jerome / Verde District / Black Hills / Yavapai Co. / Arizona / USA

Collectors Summary

Color blau
Streak color bläulichweiß
Hardness (Mohs) 2.5
Solubility +++ H2O
Crystal System monoklin, P21/c

Chemism

Chemical formula

CuFe23+(SO4)4·6H2O

Chemical composition

Eisen, Kupfer, Sauerstoff, Schwefel, Wasserstoff

Unit weight: 667.581524 u; Number of atoms in the formula: 41

Info

Empirical formula:

CuFe2(SO4)4·6H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

1.81

12

29.27

1.0079470

12.0953640

Oxygen

O

52.73

22

53.66

15.9994300

351.9874600

Sulfur

S

19.21

4

9.76

32.0655000

128.2620000

Iron

Fe

16.73

2

4.88

55.8452000

111.6904000

Copper

Cu

9.52

1

2.44

63.5463000

63.5463000

Analysis wt%

CuO : 11.29, Fe2O3 : 22.57, Al2O3 : 1.52, SO3 : 46.30, H2O : 18.52 (Ref: American Mineralogist 28)

Strunz 9th edition incl. updates

7.CB.80

7: Sulfate (Selenate, Tellurate, Chromate, Molybdate, Wolframate)
C: Sulfate (Selenate, etc.) ohne weitere Anionen, mit H2O
B: Mit ausschließlich mittelgroßen Kationen
80:Ransomit-Gruppe

Lapis Classification

VI/C.11-020

VI: SULFATE, CHROMATE, MOLYBDATE UND WOLFRAMATE
C: Wasserhaltige Sulfate, ohne fremde Anionen
11: Mittelgroße Kationen

Classification by Hölzel

7.CC.400

7: SULFATES CHROMATES MOLYBDATES WOLFRAMATES
C: Sulfates (-Anions +Water)
C: Alunogen-Group

Dana 8th edition

29.07.01.01

29: Hydrated Acid and Sulfates
07: Hydrated Acid and Sulfates where A (B)2 (XO4)4 · x(H2O)

IMA status

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

Mineral status

anerkanntes Mineral

Optical Properties

Color

blau

Streak color

bläulichweiß

Diaphaneity (Transparency)

transparent

max. Birefringence

0.064

Birefringence chart\! Ransomite title=Birefringence chart Ransomite

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

1.631

RI value β

1.643

RI value γ / ε

1.695

Ri mean

1.656

2V angle

Biaxial (+) 53°

Optical Data Luminescence

Luminescence

keine Fluoreszenz bekannt

Crystallography

Crystal System

monoklin

Class (H-M)

2/m

Space Group number

14

Space Group

P21/c

Cell parameters a (Å)

4.811

Cell parameters b (Å)

16.217

Cell parameters c (Å)

10.403

Cell parameters a/b or c/a

0.297

Cell parameters c/b

0.641

Cell parameters α

90°

Cell parameters β

93.2

Cell parameters γ

90°

Z

2

Volume (ų)

810.376

X-Ray Powder Diffraction

Crystals 3D

Open larger view

Crystal Structure 3D

Open larger view

Physical Properties

Hardness (Mohs)

2.5

VHN (Hardness Vickers)

53 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

2.63

2.736 ( ρ calc. Mineralienatlas )

Instability

+++ H2O

Preface

Author (Name, Year)

Lausen, 1928

References

Handbook of Mineralogy (Anthony et al.), 5 (2003), 579

Other languages

German

Ransomit

Spanish

Ransomita

English

Ransomite

French

Ransomite

Russian

Рансомит

CNMNC symbol

Symbol

Rns

Locations with GPS information

IDs

GUSID (Global unique identifier short form) t-lMCx1NPU6gVSRBwxPZyg
GUID (Global unique identifier) 0B4CE9B7-4D1D-4E3D-A055-2441C313D9CA
Database ID 3215