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Derbylite (Derbylit)

Pictures (2 Images total)

Derbylit xx
Views (File:
1380786487
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Derbylit xx
ain Drusen des Dolomits; Miniera Monte Arsiccio, Stazzemma, Italien; Bildbreite 4 mm
Copyright: loismin; Contribution: loismin
Collection: loismin
Location: Italien/Toskana (Toscana)/Lucca, Provinz/Apuanische Alpen/Stazzema/Sant'Anna di Stazzema/Miniera di Monte Arsiccio
Mineral: Derbylite
Image: 1380786487
Rating: 8 (votes: 1)
License: Usage for Mineralienatlas project only
Derbylit xx

ain Drusen des Dolomits; Miniera Monte Arsiccio, Stazzemma, Italien; Bildbreite 4 mm

Collection: loismin
Copyright: loismin
Contribution: loismin 2013-10-03
Locality: Miniera di Monte Arsiccio / Sant'Anna di Stazzema / Stazzema / Apuanische Alpen / Lucca, Provinz / Toskana (Toscana) / Italien
Schwarzer Derbylit x
Views (File:
1503422865
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Schwarzer Derbylit x
auf Baryt; Fundort Monte Arsiccio Mine, St. Anna di Stazzemma, Italien; Bildbreite ca 3 mm
Copyright: loismin; Contribution: loismin
Collection: loismin
Location: Italien/Toskana (Toscana)/Lucca, Provinz/Apuanische Alpen/Stazzema/Sant'Anna di Stazzema/Miniera di Monte Arsiccio
Mineral: Derbylite
Image: 1503422865
Rating: 5 (votes: 1)
License: Usage for Mineralienatlas project only
Schwarzer Derbylit x

auf Baryt; Fundort Monte Arsiccio Mine, St. Anna di Stazzemma, Italien; Bildbreite ca 3 mm

Collection: loismin
Copyright: loismin
Contribution: loismin 2017-08-22
Locality: Miniera di Monte Arsiccio / Sant'Anna di Stazzema / Stazzema / Apuanische Alpen / Lucca, Provinz / Toskana (Toscana) / Italien

Collectors Summary

Color grau mit bläulichgrün internen Reflektionen
Streak color bräunlichschwarz
Hardness (Mohs) 6.75
Solubility - Säuren
Crystal System monoklin, P21/m

Chemism

Chemical formula

(Fe3+,Fe2+,Ti)7Sb3+O13(OH)

Chemical composition

Antimon, Eisen, Titan, Sauerstoff, Wasserstoff

Unit weight: 732.091797 u; Number of atoms in the formula: 23

Info

Empirical formula:

(Fe0.6Fe0.3Ti0.1)7SbO13(OH)

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

0.14

1

4.35

1.0079470

1.0079470

Oxygen

O

30.60

14

60.87

15.9994300

223.9920200

Titanium

Ti

4.58

0.7

3.04

47.8671000

33.5069700

Iron

Fe

48.06

6.3

27.39

55.8452000

351.8247600

Antimony

Sb

16.63

1

4.35

121.7601000

121.7601000

Analysis wt%

TiO2 : 40.20, FeO : 4.44, Fe2O3 : 31.83, Sb2O3 : 19.80, H2O : 1.24 (Ref: Canadian Mineralogist 83)

Strunz 9th edition incl. updates

4.JB.55

4: Oxide, Hydroxide (Oxide, Hydroxide, V[5,6]-Vanadate, Arsenite, Antimonite, Bismutite, Sulfite, Selenite, Tellurite, Iodate)
J: Antimonite, Bismuthite, Sulfite, Selenite, Tellurite
B: [Arsenite], [Antimonite], [Bismuthite]; mit zusätzlichen [Anionen], ohne H20
55:Derbylith-Gruppe

Lapis Classification

IV/C.23-030

IV: OXIDE
C: Oxide mit Verhältnis Metall : Sauerstoff = 2:3 (M2O3 und verwandte Verbindungen)

Classification by Hölzel

4.CO.220

4: OXIDES
C: R2O3 Sesquioxides
O: Pseudopyrochlore-Group
2: Tomichite-Derbylite-Group

Dana 8th edition

46.02.03.02

46: Basic or Halogen-Containing Antimonites, Arsenites and Phosphites
02: Basic or Halogen-Containing Antimonites, Arsenites and Phosphites with miscellaneous formulae
03: Derbylite Group

IMA status

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

Mineral status

anerkanntes Mineral

Optical Properties

Color

grau mit bläulichgrün internen Reflektionen

Streak color

bräunlichschwarz

Diaphaneity (Transparency)

opak

max. Birefringence

0.06

Birefringence chart\! Derbylite title=Birefringence chart Derbylite

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

2.45

RI value β

2.45

RI value γ / ε

2.51 Li

Ri mean

2.470

2V angle

Biaxial (+) 0°~

Crystallography

Crystal System

monoklin

Class (H-M)

2/m

Space Group number

11

Space Group

P21/m

Cell parameters a (Å)

7.156

Cell parameters b (Å)

14.354

Cell parameters c (Å)

4.980

Cell parameters a/b or c/a

0.499

Cell parameters c/b

0.347

Cell parameters α

90°

Cell parameters β

104.68

Cell parameters γ

90°

Z

2

Volume (ų)

494.833

X-Ray Powder Diffraction

3.997(20),
3.186(40),
3.118(30),
2.853(100),
2.674(70),
2.479(20),
2.393(20),
2.145(20)

XRD chart Derbylite

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)

6.75

VHN (Hardness Vickers)

1077 (100g)

Density (g/cm³)

4.5 - 4.6 / Durchschnittlich = 4.55

4.913 ( ρ calc. Mineralienatlas )

Instability

- Säuren

Preface

Author (Name, Year)

Hussak & Prior, 1895

References

Handbook of Mineralogy (Anthony et al.), 3 (1997), 161

Other languages

Spanish

Derbylita

English

Derbylite

French

Derbylite

German

Derbylith

Russian

Дербилит

Japanese

デビライト

Alternative Name

German

Derbylit

CNMNC symbol

Symbol

Dby

Locations with GPS information

IDs

GUSID (Global unique identifier short form) G6NMCA4D7U60phgM1QMZFQ
GUID (Global unique identifier) 084CA31B-030E-4EED-B4A6-180CD5031915
Database ID 916