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Tillmannsite

Collectors Summary

Color bräunlichrot, rot
Streak color bräunlichrot
Lustre Diamantglanz
Cleavages keine
Fracture muschelig
Solubility - HCl
Crystal System tetragonal, I4

Chemism

Chemical formula

HgAg3(VO4)

Chemical composition

Quecksilber, Silber, Sauerstoff, Vanadium

Unit weight: 639.13589 u; Number of atoms in the formula: 9

Info

Empirical formula:

HgAg3(VO4)

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Oxygen

O

10.01

4

44.44

15.9994300

63.9977200

Vanadium

V

7.97

1

11.11

50.9415100

50.9415100

Silver

Ag

50.63

3

33.33

107.8682200

323.6046600

Mercury

Hg

31.38

1

11.11

200.5920000

200.5920000

Strunz 9th edition incl. updates

8.AC.80

8: Phosphate, Arsenate, Vanadate
A: Phosphate, etc., ohne weitere Anionen, ohne H2O
C: Mit mittelgroßen und großen [Kationen]
80:Tillmannsit-Gruppe

Lapis Classification

VII/A.11-005

VII: PHOSPHATE, ARSENATE UND VANADATE ("Phosphate" des Registers immer einschließlich isotyper Arsenate und Vanadate!)
A: Wasserfreie Phosphate [PO4] 3-, ohne fremde Anionen
11: Mittelgroße und große Kationen: Mg-Mn-Fe-Cu-Zn und Ca-Na

Classification by Hölzel

8.AD.240

8: PHOSPHATES ARSENATES VANADATES
A: Phosphates (-anions -water)
D: Phosphates, C large

Dana 8th edition

38.03.11.01

38: Anhydrous Phosphates, etc
03: Anhydrous Phosphates, etc (A+ B++)3 (XO4)2

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

Optical Properties

Color

bräunlichrot, rot

Streak color

bräunlichrot

Lustre

Diamantglanz

max. Birefringence

0.200

Birefringence chart\! Tillmannsite title=Birefringence chart Tillmannsite

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

2.3

RI value γ / ε

2.5

Ri mean

2.367

2V angle

Uniaxial (+)

Pleochroism

intensiv, rotorange zu orangebraun

Crystallography

Crystal System

tetragonal

Class (H-M)

4

Space Group number

82

Space Group

I4

Cell parameters a (Å)

7.727

Cell parameters b (Å)

-

Cell parameters c (Å)

4.648

Cell parameters a/b or c/a

0.602

Cell parameters c/b

-

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

90°

Z

2

Volume (ų)

277.516

X-Ray Powder Diffraction

5.45(20),
2.772(100),
2.735(100),
2.735(10),
2.324(30),
2.254(20),
1.740(10),
1.683(10)

XRD chart Tillmannsite

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

Crystals 3D

Open larger view

Crystal Structure 3D

Open larger view

Physical Properties

Density (g/cm³)

7.733 (berechnet)

7.648 ( ρ calc. Mineralienatlas )

Cleavages

keine

Fracture

muschelig

Tenacity

sehr spröde

Instability

- HCl

Preface

Name from

Prof. Dr. Ekkehart Tillmanns (1941 -), ein bedeutender Kristallograph und bis 2009 Leiter des Instituts für Mineralogie und Kristallographie, Wien, Österreich

Author (Name, Year)

Sarp & Pushcharovsky & MacLean & Teat & Zubkova, 2003

References

European Journal of Mineralogy 15 (2003), 177

Other languages

German

Tillmannsit

Spanish

Tillmannsita

French

Tillmannsite

English

Tillmannsite

Russian

Тиллманнсит

Traditional Chinese

砷釩汞銀石

Simplified Chinese

砷钒汞银石

CNMNC (IMA)-Number

IMA 2001-010

CNMNC symbol

Symbol

Till

Locations with GPS information

IDs

GUSID (Global unique identifier short form) f7oyNs7i20agqdgFHR-FJA
GUID (Global unique identifier) 3632BA7F-E2CE-46DB-A0A9-D8051D1F8524
Database ID 3846