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Amarantite (Amarantit)

Pictures (6 Images total)

Amarantit xx
Views (File:
1167251756
): 3085
Amarantit xx
Größe: bis 3 mm; Fundort: Chuquicamata, Antofagasta, Chile
Copyright: Sandro Maggia; Contribution: slugslayer
Location: Chile/Antofagasta, Region (II. Region)/El Loa, Provinz/Calama/Chuquicamata District/Chuquicamata Mine
Mineral: Amarantite
Image: 1167251756
Rating: 6 (votes: 1)
License: Usage for Mineralienatlas project only
Amarantit xx

Größe: bis 3 mm; Fundort: Chuquicamata, Antofagasta, Chile

Copyright: Sandro Maggia
Contribution: slugslayer 2006-12-27
Locality: Chuquicamata Mine / Chuquicamata District / Calama / El Loa, Provinz / Antofagasta, Region (II. Region) / Chile
Amarantit
Views (File:
1269017726
): 2783
Amarantit
Größe: 8 mm, Fundort: Kavir-e-Sagand, Provinz Yazd, Iran.
Copyright: Michael Roarke; Contribution: thdun5
Location: Iran/Yazd, Provinz/Saghand/Kavir-e-Sagand
Mineral: Amarantite
Image: 1269017726
Rating: 6 (votes: 1)
License: Usage for Mineralienatlas project only
Amarantit

Größe: 8 mm, Fundort: Kavir-e-Sagand, Provinz Yazd, Iran.
Copyright: Michael Roarke
Contribution: thdun5 2010-03-19
Locality: Kavir-e-Sagand / Saghand / Yazd, Provinz / Iran
Amarantit
Views (File:
1264714288
): 2697
Amarantit
Größe: 18 x 14 cm; Fundort: Kavir-e-Sagand, Provinz Yazd, Iran
Copyright: Rock Currier; Contribution: slugslayer
Location: Iran/Yazd, Provinz/Saghand/Kavir-e-Sagand
Mineral: Amarantite
Image: 1264714288
License: Usage for Mineralienatlas project only
Amarantit

Größe: 18 x 14 cm; Fundort: Kavir-e-Sagand, Provinz Yazd, Iran
Copyright: Rock Currier
Contribution: slugslayer 2010-01-28
Locality: Kavir-e-Sagand / Saghand / Yazd, Provinz / Iran
Amarantit
Views (File:
1401369983
): 957
Amarantit
Cuya, Los Camarones, Reg. Arica y Parinacota, Chile, 40 x 25 x 37 mm
Copyright: Embarak; Contribution: Embarak
Collection: Embarak
Location: Chile/Arica y Parinacota, Region (XV. Region)/Arica, Provinz/Los Camarones/Cuya
Mineral: Amarantite
Image: 1401369983
License: Usage for Mineralienatlas project only
Amarantit

Cuya, Los Camarones, Reg. Arica y Parinacota, Chile, 40 x 25 x 37 mm
Collection: Embarak
Copyright: Embarak
Contribution: Embarak 2014-05-29
Locality: Cuya / Los Camarones / Arica, Provinz / Arica y Parinacota, Region (XV. Region) / Chile
Amarantit xx
Views (File:
1611156794
): 306
Amarantit xx
Fundort: Caracoles, Sierra Gorda, Antofagasta, Chile (TL); BB = ca. 2 mm.
Copyright: prospector56; Contribution: prospector56
Collection: Lithothek der Münchener Micromounter, Collection number: A047371, Donator: prospector56
Location: Chile/Antofagasta, Region (II. Region)/Antofagasta, Provinz/Sierra Gorda/Caracoles
Mineral: Amarantite
Image: 1611156794
License: Usage for Mineralienatlas project only
Amarantit xx (SNr: A047371)

Fundort: Caracoles, Sierra Gorda, Antofagasta, Chile (TL); BB = ca. 2 mm.
Collection: Lithothek der Münchener Micromounter
Copyright: prospector56
Contribution: prospector56 2021-01-20
Locality: Caracoles / Sierra Gorda / Antofagasta, Provinz / Antofagasta, Region (II. Region) / Chile
Amarantit
Views (File:
1641115435
): 81
Amarantit
Amarantit, Hohmannit, Cerros Los Pintados, Prov. Iquique, Reg. Tarapacá, Chile, 40 x 25 x 25 mm
Copyright: Embarak; Contribution: Embarak
Collection: Embarak
Location: Chile/Tarapacá, Region (I. Region)/Iquique, Provinz/Cerros Los Pintados
Mineral: Amarantite
Image: 1641115435
License: Usage for Mineralienatlas project only
Amarantit

Amarantit, Hohmannit, Cerros Los Pintados, Prov. Iquique, Reg. Tarapacá, Chile, 40 x 25 x 25 mm
Collection: Embarak
Copyright: Embarak
Contribution: Embarak 2022-01-02
Locality: Cerros Los Pintados / Iquique, Provinz / Tarapacá, Region (I. Region) / Chile

You find additional Amarantit specimen at the Geolitho Museum

Collectors Summary

Color rot
Streak color gelb
Hardness (Mohs) 2.5
Solubility +++ verdünnte HCl, ++ H2O
Crystal System triklin, P1

Chemism

Chemical formula

Fe3+2O(SO4)2(H2O)4·3H2O

Chemical composition

Eisen, Sauerstoff, Schwefel, Wasserstoff

Unit weight: 445.923538 u; Number of atoms in the formula: 34

Info

Empirical formula:

Fe2O(SO4)2(H2O)4·3H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Hydrogen

H

3.16

14

41.18

1.0079470

14.1112580
Oxygen

O

57.41

16

47.06

15.9994300

255.9908800
Sulfur

S

14.38

2

5.88

32.0655000

64.1310000
Iron

Fe

25.05

2

5.88

55.8452000

111.6904000

Analysis wt%

Fe2O3 : 36.10, SO3 : 35.10, H2O : 28.80 (Ref: Bulletin de Mineralogie 64)

Strunz 9th edition incl. updates

7.DB.30

7: Sulfate (Selenate, Tellurate, Chromate, Molybdate, Wolframate)
D: Sulfate (Selenate, etc.) mit weitere Anionen, mit H2O
B: mit mittelgroßen Kationen; isolierte Oktaeder und begrenzte Einheiten
30:Amarantit-Gruppe

Lapis Classification

VI/D.01-040

VI: SULFATE, CHROMATE, MOLYBDATE UND WOLFRAMATE
D: Wasserhaltige Sulfate, mit fremden Anionen
1: Mittelgroße Kationen

Classification by Hölzel

7.DE.340

7: SULFATES CHROMATES MOLYBDATES WOLFRAMATES
D: Sulfates (+Anions +Water)
E: Aluminite-Group

Dana 8th edition

31.09.03.01

31: Hydrated Sulfates Containing Hydroxyl or Halogen
09: Hydrated Sulfates Containing Hydroxyl or Halogen where (A+ B++) (XO4) Zq·x(H2O)

IMA status

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

Mineral status

anerkanntes Mineral

Optical Properties

Color

rot

Streak color

gelb

max. Birefringence

0.105
Birefringence chart\! Amarantite title=Birefringence chart Amarantite

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

1.516

RI value β

1.598

RI value γ / ε

1.621

Ri mean

1.578

2V angle

Biaxial (-) 30°

Crystallography

Crystal System

triklin

Class (H-M)

1

Space Group number

2

Space Group

P1

Cell parameters a (Å)

8.90

Cell parameters b (Å)

11.56

Cell parameters c (Å)

6.64

Cell parameters a/b or c/a

0.770

Cell parameters c/b

0.574

Cell parameters α

95.65

Cell parameters β

90.40

Cell parameters γ

97.22

Z

2

Volumne (ų)

674.311

X-Ray Powder Diffraction

11.25(100),
8.69(100),
5.16(70),
4.98(70),
3.57(90),
3.11(80),
3.05(90),
2.622(70)
XRD chart Amarantite

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)

2.5

VHN (Hardness Vickers)

53 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

2.24 (gemessen)

2.196 ( ρ calc. Mineralienatlas )

Instability

+++ verdünnte HCl, ++ H2O

(Co-)Type locality

(Co-)Type locality

Chile/Antofagasta, Region (II. Region)/Antofagasta, Provinz/Sierra Gorda/Caracoles

Preface

Author (Name, Year)

Frenzel, 1888

Additional Information

gut in Wasser löslich

References

Handbook of Mineralogy (Anthony et al.), 5 (2003), 15

Other languages

German

Amarantit

Spanish

Amarantita

French

Amarantite

English

Amarantite

Russian

Амарантит

Alternative Name

Castanite (of Bandy)

Paposite

CNMNC symbol

Symbol

Ama

Locations with GPS information