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Halotrichite

Pictures (40 Images total)

Halotrichit
Views (File:
1424936815
): 2463
Halotrichit
nadelige, gelb- bis graugrüne Halotrichit xx auf Schiefer; Absetzerhalde, Ronneburger Revier, Thüringen; Bildbreite: 3 cm
Copyright: chribiedav; Contribution: chribiedav
Collection: chribiedav
Location: Deutschland/Thüringen/Greiz, Landkreis/Ronneburg/Absetzerhalde
Mineral: Halotrichite
Image: 1424936815
Rating: 9.5 (votes: 2)
License: Usage for Mineralienatlas project only
Halotrichit

nadelige, gelb- bis graugrüne Halotrichit xx auf Schiefer; Absetzerhalde, Ronneburger Revier, Thüringen; Bildbreite: 3 cm
Collection: chribiedav
Copyright: chribiedav
Contribution: chribiedav 2015-02-26
Locality: Absetzerhalde / Ronneburg / Greiz, Landkreis / Thüringen / Deutschland
Halotrichit
Views (File:
1302556531
): 3868, Rating: 8.7
Halotrichit
Bildbreite: 16,51 mm, Fundort: Grube Clara, Wolfach, Schwarzwald, Deutschland
Copyright: loparit; Contribution: loparit
Collection: Josef Höhn, Heidelberg
Location: Deutschland/Baden-Württemberg/Freiburg, Bezirk/Ortenaukreis/Oberwolfach/Grube Clara
Mineral: Halotrichite
Image: 1302556531
Rating: 8.7 (votes: 10)
License: Usage for Mineralienatlas project only
Halotrichit

Bildbreite: 16,51 mm, Fundort: Grube Clara, Wolfach, Schwarzwald, Deutschland
Collection: Josef Höhn, Heidelberg
Copyright: loparit
Contribution: loparit 2011-04-11
Locality: Grube Clara / Oberwolfach / Ortenaukreis / Freiburg, Bezirk / Baden-Württemberg / Deutschland
Halotrichit
Views (File:
1178809934
): 3911
Halotrichit
Bildbreite: 10 mm; Fundort: Grube Clara, Wolfach, Schwarzwald
Copyright: Stephan Wolfsried; Contribution: Hg
Location: Deutschland/Baden-Württemberg/Freiburg, Bezirk/Ortenaukreis/Oberwolfach/Grube Clara
Mineral: Halotrichite
Image: 1178809934
Rating: 8.5 (votes: 2)
License: Usage for Mineralienatlas project only
Halotrichit

Bildbreite: 10 mm; Fundort: Grube Clara, Wolfach, Schwarzwald
Copyright: Stephan Wolfsried
Contribution: Hg 2007-05-10
Locality: Grube Clara / Oberwolfach / Ortenaukreis / Freiburg, Bezirk / Baden-Württemberg / Deutschland
Halotrichit
Views (File:
1240154168
): 4289
Halotrichit
Halotrichit aus Ungarn / Uzsabánya / Láz Hill
Copyright: Stefan; Contribution: Stefan
Collection: Lithothek der Münchener Micromounter, Collection number: B001036, Donator: Manfred Seitz
Location: Ungarn/Veszprém, Komitat/Tapolca, Kreis/Uzsa/Uzsabánya
Mineral: Halotrichite
Image: 1240154168
Rating: 9 (votes: 2)
License: Usage for Mineralienatlas project only
Halotrichit (SNr: B001036)

Halotrichit aus Ungarn / Uzsabánya / Láz Hill
Collection: Lithothek der Münchener Micromounter
Copyright: Stefan
Contribution: Stefan 2009-04-19
Locality: Uzsabánya / Uzsa / Tapolca, Kreis / Veszprém, Komitat / Ungarn
Halotrichite
Views (File:
1350502569
): 3194
Halotrichite
Dubník, Slovakia; Field of View 7mm
Copyright: Vitezslav Snasel; Contribution: Vita
Location: Slowakei/Presovský kraj/Presov, Okres/Czerwenitza (Cervenica)/Dubnik
Mineral: Halotrichite
Image: 1350502569
Rating: 8 (votes: 2)
License: Usage for Mineralienatlas project only
Halotrichite

Dubník, Slovakia; Field of View 7mm
Copyright: Vitezslav Snasel
Contribution: Vita 2012-10-17
Locality: Dubnik / Czerwenitza (Cervenica) / Presov, Okres / Presovský kraj / Slowakei
Halotrichit
Views (File:
1234639961
): 4015, Rating: 7.45
Halotrichit
Größe: 5 x 4,5 cm; Fundort: Rodalquilar, Cabo de Gata, Spanien
Copyright: Hg; Contribution: Hg
Collection: Hg
Location: Spanien/Andalusien (Andalucía)/Almería, Provinz/Níjar/Nationalpark Cabo de Gata-Nijar/Rodalquilar
Mineral: Halotrichite
Image: 1234639961
Rating: 7.45 (votes: 11)
License: Usage for Mineralienatlas project only
Halotrichit

Größe: 5 x 4,5 cm; Fundort: Rodalquilar, Cabo de Gata, Spanien
Collection: Hg
Copyright: Hg
Contribution: Hg 2009-02-14
Locality: Rodalquilar / Nationalpark Cabo de Gata-Nijar / Níjar / Almería, Provinz / Andalusien (Andalucía) / Spanien

You find additional Halotrichite specimen at the Geolitho Museum

Collectors Summary

Color farblos, grün, grauweiß, gelb, weiß
Streak color weiß
Hardness (Mohs) 1.5
Solubility +++ H2O, Aufbewahren in einem versiegelten Behälter
Crystal System monoklin, P21/c

Chemism

Chemical formula

Fe2+Al2(SO4)4·22H2O

Chemical composition

Aluminium, Eisen, Sauerstoff, Schwefel, Wasserstoff

Unit weight: 890.3982844 u; Number of atoms in the formula: 89

Info

Empirical formula:

FeAl2(SO4)4·22H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Hydrogen

H

4.98

44

49.44

1.0079470

44.3496680
Oxygen

O

68.28

38

42.70

15.9994300

607.9783400
Aluminium

Al

6.06

2

2.25

26.9815382

53.9630764
Sulfur

S

14.41

4

4.49

32.0655000

128.2620000
Iron

Fe

6.27

1

1.12

55.8452000

55.8452000

Analysis wt%

FeO : 7.28, CuO : 0.66, Al2O3 : 10.26, Fe2O3 : 0.65, SO3 : 37.28, H2O : 43.33 (Ref: Dana, 7th ed. 2)

Strunz 9th edition incl. updates

7.CB.85

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

Lapis Classification

VI/C.12-020

VI: SULFATE, CHROMATE, MOLYBDATE UND WOLFRAMATE
C: Wasserhaltige Sulfate, ohne fremde Anionen
12: Mittelgroße und sehr große Kationen; Halotrichit-Gruppe

Classification by Hölzel

7.CD.220

7: SULFATES CHROMATES MOLYBDATES WOLFRAMATES
C: Sulfates (-Anions +Water)
D: Sulfates, C medium + large
2: Halotrichite-Group

Dana 8th edition

29.07.03.02

29: Hydrated Acid and Sulfates
07: Hydrated Acid and Sulfates where A (B)2 (XO4)4 · x(H2O)
03: Halotrichite Group (Monoclinic with 22 H2O)

IMA status

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

Mineral status

anerkanntes Mineral

Optical Properties

Color

farblos, grün, grauweiß, gelb, weiß

Streak color

weiß

Diaphaneity (Transparency)

transparent bis durchscheinend

max. Birefringence

0.010
Birefringence chart\! Halotrichite title=Birefringence chart Halotrichite

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

1.480

RI value β

1.486

RI value γ / ε

1.490

Ri mean

1.485

2V angle

Biaxial (-) 35°

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)

20.51

Cell parameters b (Å)

24.28

Cell parameters c (Å)

6.18

Cell parameters a/b or c/a

0.845

Cell parameters c/b

0.255

Cell parameters α

90°

Cell parameters β

100.10

Cell parameters γ

90°

Z

4

Volumne (ų)

3029.842

X-Ray Powder Diffraction

6.06(40),
4.91(70),
4.80(80),
4.55(40),
4.31(100),
4.12(80),
3.98(40),
3.49(100)
XRD chart Halotrichite

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)

1.5

VHN (Hardness Vickers)

18 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

1.78 - 1.9 / Durchschnittlich = 1.84

1.952 ( ρ calc. Mineralienatlas )

Radioactivity

nicht vorhanden

Instability

+++ H2O, Aufbewahren in einem versiegelten Behälter

Preface

Author (Name, Year)

Glocker, 1839

References

Handbook of Mineralogy (Anthony et al.), 5 (2003), 273

Other languages

German

Halotrichit

French

Halotrichite

English

Halotrichite

Spanish

Halotriquita

Russian

Галотрихит

Simplified Chinese

铁明矾

Simplified Chinese

铁茂

Alternative Name

German

Alotrichit

Spanish

Alotrichita

French

Alotrichite

German

Bergbutter

Butter-Rock

German

Eisenalaun

Feather Alum

Federalaun

German

Federalaun vom Freyenwalde

English

Ferrohalotrichite

Italian

Halotrichine

German

Halotrichit (of Glocker)

Spanish

Halotrichita

Halotrichite (of Glocker)

German

Hversalt

Iron Alum

German

Johnsonit

Spanish

Johnsonita

English

Johnsonite

German

Masrit

Spanish

Masrita

English

Masrite

Mountain Butter

CNMNC symbol

Symbol

Hth

Locations with GPS information