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Diaspore (Diaspor)

Pictures (23 Images total)

Diaspor
Views (File:
1272150136
): 7164
Diaspor
Größe: 2,36 mm; Fundort: Saga 1 Quarry, Sagåsen (Strandåsen), Mørje, Porsgrunn, Telemark, Norwegen
Copyright: Matteo Chinellato; Contribution: Hg
Collection: Domenico Preite
Location: Norwegen/Vestfold, Provinz/Porsgrunn, Kommune/Mørje/Sagåsen (Strandåsen)/Saga 1
Mineral: Diaspore
Image: 1272150136
Rating: 9 (votes: 3)
License: Usage for Mineralienatlas project only
Diaspor

Größe: 2,36 mm; Fundort: Saga 1 Quarry, Sagåsen (Strandåsen), Mørje, Porsgrunn, Telemark, Norwegen

Collection: Domenico Preite
Copyright: Matteo Chinellato
Contribution: Hg 2010-04-24
Locality: Saga 1 / Sagåsen (Strandåsen) / Mørje / Porsgrunn, Kommune / Vestfold, Provinz / Norwegen
Diaspor
Views (File:
1288906071
): 6070
Diaspor
Größe: 7,55 mm; Fundort: Saga 1 Quarry, Sagåsen (Strandåsen), Mørje, Porsgrunn, Telemark, Norwegen
Copyright: Matteo Chinellato; Contribution: Hg
Collection: Domenico Preite
Location: Norwegen/Vestfold, Provinz/Porsgrunn, Kommune/Mørje/Sagåsen (Strandåsen)/Saga 1
Mineral: Diaspore
Image: 1288906071
Rating: 9 (votes: 2)
License: Usage for Mineralienatlas project only
Diaspor

Größe: 7,55 mm; Fundort: Saga 1 Quarry, Sagåsen (Strandåsen), Mørje, Porsgrunn, Telemark, Norwegen

Collection: Domenico Preite
Copyright: Matteo Chinellato
Contribution: Hg 2010-11-04
Locality: Saga 1 / Sagåsen (Strandåsen) / Mørje / Porsgrunn, Kommune / Vestfold, Provinz / Norwegen
Diaspor
Views (File:
1377860792
): 4403
Diaspor
Bildbreite: 8 mm, Fundort: Banska Stiavnica, Banska Bystrica, Slowakei
Copyright: Martin Stevko; Contribution: thdun5
Location: Slowakei/Banskobystrický kraj/Banská Štiavnica, Okres/Banská Štiavnica (Schemnitz)
Mineral: Diaspore
Image: 1377860792
Rating: 9 (votes: 2)
License: Usage for Mineralienatlas project only
Diaspor

Bildbreite: 8 mm, Fundort: Banska Stiavnica, Banska Bystrica, Slowakei

Copyright: Martin Stevko
Contribution: thdun5 2013-08-30
Locality: Banská Štiavnica (Schemnitz) / Banská Štiavnica, Okres / Banskobystrický kraj / Slowakei
Diaspor
Views (File:
1666203537
): 151
Diaspor
Diaspor als "Zultanit"-Zwilling; Mugla,Türkei; 12 mm groß
Copyright: Rockhounder; Contribution: Rockhounder
Collection: Rockhounder
Location: Türkei/Ägäisregion/Mugla, Provinz
Mineral: Diaspore
Image: 1666203537
Rating: 9 (votes: 1)
License: Usage for Mineralienatlas project only
Diaspor

Diaspor als "Zultanit"-Zwilling; Mugla,Türkei; 12 mm groß

Collection: Rockhounder
Copyright: Rockhounder
Contribution: Rockhounder 2022-10-19
Locality: Mugla, Provinz / Ägäisregion / Türkei
Diaspor
Views (File:
1410534301
): 2824
Diaspor
Tafelige farblose Kristalle, BB = 9 mm, Fundort: Prov. Mugla, Türkei.
Copyright: Bebo; Contribution: Münchener Micromounter
Collection: Lithothek der Münchener Micromounter, Collection number: A023312, Donator: Fritz Schreiber
Location: Türkei/Ägäisregion/Mugla, Provinz
Mineral: Diaspore
Image: 1410534301
Rating: 8 (votes: 2)
License: Usage for Mineralienatlas project only
Diaspor (SNr: A023312)

Tafelige farblose Kristalle, BB = 9 mm, Fundort: Prov. Mugla, Türkei.

Collection: Lithothek der Münchener Micromounter
Copyright: Bebo
Contribution: Münchener Micromounter 2014-09-12
Locality: Mugla, Provinz / Ägäisregion / Türkei

You find additional specimen at the Geolitho Museum

Collectors Summary

Color farblos, weiß, weingelb, rosa, rötlich, violett, grau
Streak color weiß
Lustre Glasglanz, Perlmuttglanz
Hardness (Mohs) 6.5 - 7
Solubility - Säuren, Ultraschallbad!
Crystal System orthorhombisch, Pbnm
Morphology gestreifte Tafeln, Zwillinge; dünntafelig-flachprismatische Aggregate, derb, Überkrustungen

Chemism

Chemical formula

AlO(OH)

Chemical composition

Aluminium, Sauerstoff, Wasserstoff

Unit weight: 59.9883452 u; Number of atoms in the formula: 4

Info

Empirical formula:

AlO(OH)

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

1.68

1

25.00

1.0079470

1.0079470

Oxygen

O

53.34

2

50.00

15.9994300

31.9988600

Aluminium

Al

44.98

1

25.00

26.9815382

26.9815382

Analysis wt%

Al2O3 : 84.44, SiO2 : 0.42, H2O : 14.99 (Ref: Chemie der Erde 33)

Strunz 9th edition incl. updates

4.FD.10

4: Oxide, Hydroxide (Oxide, Hydroxide, V[5,6]-Vanadate, Arsenite, Antimonite, Bismutite, Sulfite, Selenite, Tellurite, Iodate)
F: Hydroxide (ohne V oder U)
D: Hydroxide mit OH, ohne H2O; Ketten aus kantenverknüpften Oktaeder
10:Diaspor-Gruppe

Lapis Classification

IV/F.06-010

IV: OXIDE
F: Hydroxide und oxidische Hydrate (wasserhaltige Oxide mit Schichtstruktur)

Classification by Hölzel

4.FC.200

4: OXIDES
F: Hydroxides and Hydrates (without V and U)
C: Oxihydroxides
2: MeO(OH) Diaspore-Group

Dana 8th edition

06.01.01.01

06: Hydroxides and Oxides Containing Hydroxyl
01: Hydroxides and Oxides Containing Hydroxyl where X+++O OH
01: Diaspore group (Orthorhombic, Pnma or Pnmd)

IMA status

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

Mineral status

anerkanntes Mineral

Optical Properties

Color

farblos, weiß, weingelb, rosa, rötlich, violett, grau

Streak color

weiß

Diaphaneity (Transparency)

transparent, durchscheinend

Lustre

Glasglanz, Perlmuttglanz

max. Birefringence

0.048

Birefringence chart\! Diaspore title=Birefringence chart Diaspore

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

1.702

RI value β

1.722

RI value γ / ε

1.750

Ri mean

1.725

2V angle

Biaxial (+) 85°

Optical Data Luminescence

Color SW-UV (254nm)

 

gelblich weiß

LW-UV Other Colors

 

rot

Most Common Activator

Cr3+

Afterglow (Persistant Luminescence)

keine Daten

Crystallography

Crystal System

orthorhombisch

Class (H-M)

mmm

Space Group number

62

Space Group

Pbnm

Cell parameters a (Å)

4.401

Cell parameters b (Å)

9.425

Cell parameters c (Å)

2.845

Cell parameters a/b or c/a

0.467

Cell parameters c/b

0.302

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

90°

Z

4

Volume (ų)

118.009

X-Ray Powder Diffraction

3.99(100),
2.558(30),
2.317(60),
2.131(50),
2.077(50),
1.633(40),
1.480(20),
1.376(20)

XRD chart Diaspore

Calculated from d-spacing and intensity at 0.1541838 nm (Cu)

Morphology

gestreifte Tafeln, Zwillinge; dünntafelig-flachprismatische Aggregate, derb, Überkrustungen

Crystals 3D

Open larger view

Crystal Structure 3D

Open larger view

Physical Properties

Hardness (Mohs)

6.5 - 7

VHN (Hardness Vickers)

1110 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

3.3-3.5

3.376 ( ρ calc. Mineralienatlas )

Radioactivity

keine bekannt

Instability

- Säuren, Ultraschallbad!

Chemical Properties and Tests

sprüht in der Flamme, schmilzt nicht, schwer löslich in HF; Behandlung: Reinigung mit Wasser und verdünnten Säuren

IR-, RAMAN-Spektren siehe: Simon Delattre et al.: Experimental and theoretical study of the vibrational properties of diaspore (α-AlOOH). Physics and Chemistry of Minerals Volume 39, Number 2 (2012) S.93-102.

Preface

Occurrences

in metamorphen/kontaktmetamorphen Lagerstätten; vorwiegend in Bauxiten und kristallinen Schiefern;

Associations

Calcit, Kyanit, Korund

Rareness

häufig

Author (Name, Year)

Haüy, 1801

Relevance, Usage

Al-Gewinnung, feuerfestes Material; Sammlerzwecke

Collector information

Bezeichnung vom griech. Wort diaspeiran - verstreuen abgeleitet (Haüy, 1801).

References

Handbook of Mineralogy (Anthony et al.), 3 (1997), 165

Varieties

Mangan-diaspore

manganreiche Diaspor-Varietät

Zultanite

Other languages

Dutch

Diaspoor

German

Diaspor

English

Diaspore

French

Diaspore

Spanish

Diáspora

Spanish

Diásporo

Russian

Диаспор

Ukrainian

Діаспор

Japanese

ダイアスポア

Traditional Chinese

一水硬鋁石

Simplified Chinese

一水硬铝石

Alternative Name

German

Blättricher Hydrargillit

Diasporit

Diasporita

Diasporite

Diasporogelit

Diasporogelita

Diasporogelite

Empholit

Empholita

Empholite

Kayserit

Kayserita

Kayserite

Tanatar

Tanatarit

Tanatarita

Tanatarite

Traditional Chinese

硬水鋁石

Simplified Chinese

硬水铝石

CNMNC symbol

Symbol

Dsp

Locations with GPS information

IDs

GUSID (Global unique identifier short form) JJj4V1Z6q0CMScsfJ6joQg
GUID (Global unique identifier) 57F89824-7A56-40AB-8C49-CB1F27A8E842
Database ID 930