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Ransomite

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Ransomit
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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. ...

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

Volumne (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

Related minerals "Strunz Classification" (9. Edition) [Mineral | Chemical formula | Crystal system : Class (H-M) : Space Group | Indenture number]

Ransomite

CuFe23+(SO4)4·6H2O

monoklin : 2/m : P21/c

7.CB.80

Related minerals "Lapis Classification" [Mineral | Chemical formula | Crystal system : Class (H-M) : Space Group | Indenture number]

Römerite

Fe2+Fe23+(SO4)4·14H2O

triklin : 1 : P1

VI/C.11-010

Lishizhenite

ZnFe23+(SO4)4·14 H2O

triklin : 1 : P1

VI/C.11-015

Ransomite

CuFe23+(SO4)4·6H2O

monoklin : 2/m : P21/c

VI/C.11-020

Related minerals "Hoelzel Classification" [Mineral | Chemical formula : Crystal system : Class (H-M) | Space Group | Indenture number]

Ransomite

CuFe23+(SO4)4·6H2O

monoklin : 2/m : P21/c

7.CC.400

Römerite

Fe2+Fe23+(SO4)4·14H2O

triklin : 1 : P1

7.CC.420

Lishizhenite

ZnFe23+(SO4)4·14 H2O

triklin : 1 : P1

7.CC.430

Related minerals "Dana 8. Classification" [Mineral | Chemical formula : Crystal system : Class (H-M) | Space Group | Indenture number]

Ransomite

CuFe23+(SO4)4·6H2O

monoklin : 2/m : P21/c

29.07.01.01

Römerite

Fe2+Fe23+(SO4)4·14H2O

triklin : 1 : P1

29.07.02.01

Lishizhenite

ZnFe23+(SO4)4·14 H2O

triklin : 1 : P1

29.07.02.02

Pickeringite

MgAl2(SO4)4·22H2O

monoklin : 2/m : P21/c

29.07.03.01

Halotrichite

Fe2+Al2(SO4)4·22H2O

monoklin : 2/m : P21/c

29.07.03.02

Apjohnite

MnAl2(SO4)4·22H2O

monoklin : 2/m : P21/c

29.07.03.03

Dietrichite

(Zn,Fe2+,Mn)Al2(SO4)4·22H2O

monoklin : 2/m : P21/c

29.07.03.04

Bílinite

Fe2+Fe23+(SO4)4·22H2O

monoklin : 2/m : P21/c

29.07.03.05

Wupatkiite

(Co,Mg)Al2[SO4]4·22H2O

monoklin : 2/m : P21/c

29.07.03.07

Other languages

German

Ransomit

Spanish

Ransomita

English

Ransomite

French

Ransomite

Russian

Рансомит

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

German pages

DeWikiPedia - search for: Ransomit
Google-Bilder-Suche - search for: Ransomit
Mineralogisch-Petrographisches-Institut Hamburg - search for: Ransomit

English pages

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Handbook-of-Mineralogy - search for: Ransomite
RRUFF - Raman, XRD and other mineral data - search for: Ransomite
RRUFF - References and PDF downloads - search for: Ransomite
American-Mineralogist-Crystal-Structure-Database - search for: Ransomite
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Russian pages

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Mineral Dealer

German pages

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Locations with GPS information