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Philrothite

Collectors Summary

Color schwarz
Streak color dunkelbraun
Lustre Metallglanz
Hardness (Mohs) 3 - 3.5
Cleavages fehlt
Fracture uneben
Crystal System monoklin, P21/c
Morphology xenomorphe Kristalle bis 200 μm

Chemism

Chemical formula

TlAs3S5

Empirical formula (analysis)

(Tl0.789Pb0.198)Σ0.987 (As2.662Sb0.159Ag0.142Cu0.004Hg0.002)Σ2.969 S5.044

Chemical composition

Arsen, Thallium, Schwefel

Unit weight: 598.798218344 u; Number of atoms in the formula: 9

Info

Empirical formula:

(Tl0.789Pb0.198)(As2.662Sb0.159Ag0.142Cu0.004Hg0.002)S5.044

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Sulfur

S

27.01

5.04

56.04

32.0655000

161.7383820
Copper

Cu

0.04

0

0.04

63.5463000

0.2541852
Arsenic

As

33.31

2.66

29.58

74.9216020

199.4413045
Silver

Ag

2.56

0.14

1.58

107.8682200

15.3172872
Antimony

Sb

3.23

0.16

1.77

121.7601000

19.3598559
Mercury

Hg

0.07

0

0.02

200.5920000

0.4011840
Thallium

Tl

26.93

0.79

8.77

204.3833200

161.2584395
Lead

Pb

6.85

0.2

2.20

207.2100000

41.0275800

Lapis Classification

II/E.14-014

II: SULFIDE UND SULFOSALZE (Sulfide, Selenide, Telluride, Arsenide, Antimonide, Bismutide)
E: Sulfosalze (S : As,Sb,Bi = x)
14: Sulfosalze mit Thallium/Quecksilber vorherrschend (x=4,0 - 1,6)

IMA status

anerkannt - CNMNC Newsletter No. 18, December 2013

Mineral status

anerkanntes Mineral

Optical Properties

Color

schwarz

Streak color

dunkelbraun

Diaphaneity (Transparency)

opak

Lustre

Metallglanz

Pleochroism

schwach von dunkelgrau bis hellgrau

Bireflectance

in reflektiertem Licht moderate Bireflektanz

Anisotropism

anisotrop mit grau bis bläulich rotierenden Tönungen, keine Innenreflexe

Reflectivity: (Lambda nm) ↓, ↑, Ø

(471.1) 26.5, 28.8, 27,65
(548.3) 25.4, 27.2, 26.30
(586.6) 24.6, 26.3, 25.45
(652.3) 24.0, 25.1, 24,55
Reflection chart Philrothite

Reflectivity Ø

25,99

Crystallography

Crystal System

monoklin

Class (H-M)

2/m

Space Group number

14

Space Group

P21/c

Cell parameters a (Å)

8.013

Cell parameters b (Å)

24.829

Cell parameters c (Å)

11.762

Cell parameters a/b or c/a

0.323

Cell parameters c/b

0.474

Cell parameters α

90°

Cell parameters β

132.84°

Cell parameters γ

90°

Z

8

Volumne (ų)

1715.895

Kristall structure

Struktur bestimmt; Neuer Strukturtyp

X-Ray Powder Diffraction

12.415(52), 3.677(100), 3.454(45), 3.015(46), 2.894(52), 2.769(76), 2.764(77), 2.324(52)
XRD chart Philrothite

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

Morphology

xenomorphe Kristalle bis 200 μm

Crystal Structure 3D

Open larger view

Physical Properties

Hardness (Mohs)

3 - 3.5

VHN (Hardness Vickers)

120–137 (VHN25)

Density (g/cm³)

4.636 ( ρ calc. Mineralienatlas )

Cleavages

fehlt

Fracture

uneben

Tenacity

spröde

(Co-)Type locality

(Co-)Type locality

Schweiz/Wallis/Goms, Bezirk/Binn/Fäld (Imfeld, Im Feld)/Grube Lengenbach

Type material

Museum of Mineralogy of the Department of Geosciences at the University of Padova, Italien

Collection number of type material

MMP M12605

Preface

Occurrences

Sehr seltene Kristalle bis 200 μm auf Realgar

Associations

Smithit, Rutil und Sartorit

Name from

Philippe Roth (*1963), Kopf der Forschungsgemeinschaft Lengenbach.

Author (Name, Year)

Luca Bindi, Fabrizio Nestola, Emil Makovicky, Alessandro Guastoni und Luca Debattisti (2013)

References

Bindi, L., Nestola, F., Makovicky, E., Guastoni, A., de Battisti, L. (2014): Tl-bearing sulfosalts from the Lengenbach quarry, Binn valley, Switzerland: philrothite, TlAs3S5. Mineralogical Magazine, 78, 1-9

Lapis Jg. 39, Nr 5, Mai 2014

Related minerals "Lapis Classification" [Mineral | Chemical formula | Crystal system : Class (H-M) : Space Group | Indenture number]

Rebulite

Tl5Sb5As8S22

monoklin : 2/m : P21/c

II/E.14-010

Jankovićite

Tl5Sb9(As,Sb)4S22

triklin : 1 : P1

II/E.14-012

Philrothite

TlAs3S5

monoklin : 2/m : P21/c

II/E.14-014

Imhofite

Tl5.8As15.4S26

monoklin : 2/m : P21/n

II/E.14-015

Bernardite

Tl(As,Sb)5S8

monoklin : 2/m : P21/c

II/E.14-020

Gillulyite

Tl2(As,Sb)8S13

monoklin : 2/m : P2/n

II/E.14-025

Pierrotite

Tl2Sb6As4S16

orthorhombisch : mm2 : Pna21

II/E.14-030

Parapierrotite

Tl(Sb,As)5S8

monoklin : m : Pn

II/E.14-040

Dalnegroite

Tl4Pb2(As,Sb)20S34

triklin : 1 : P1

II/E.14-045

Chabournéite

(Tl,Pb)21(Sb,As)91S147

triklin : 1 : P1

II/E.14-050

Protochabournéite

Tl2-xPb1+2x(Sb10-x-yAsy)S17 (x = 0.10-0.24, y = 1-2)

triklin : 1 : P1

II/E.14-052

Boscardinite

TlPb4(Sb7As2)Σ9S18

triklin : 1 : P1

II/E.14-055

Gabrielite

Tl2AgCu2As3S7

triklin : 1 : P1

II/E.14-060

Other languages

German

Philrothit

English

Philrothite

Russian

Филротит

IMA Number

IMA 2013-066

Automatic Links to external internet sources (Responsibility is with the operator)

German pages

 DeWikiPedia - search for: Philrothit
Google-Bilder-Suche - search for: Philrothit
Mineralogisch-Petrographisches-Institut Hamburg - search for: Philrothit

English pages

 Mindat - search for: Philrothite
Webmineral - search for:Philrothite
Handbook-of-Mineralogy - search for: Philrothite
RRUFF - Raman, XRD and other mineral data - search for: Philrothite
RRUFF - References and PDF downloads - search for: Philrothite
American-Mineralogist-Crystal-Structure-Database - search for: Philrothite
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Russian pages

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Mineral Dealer

German pages

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Locations with GPS information




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