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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

Strunz 9th edi­tion incl. updates

2.HC.

2: Sulfide und Sulfosalze (Sulfide, Selenide, Telluride, Arsenide, Antimonide, Bismutide, Sulfarsenite, Sulfantimonite, Sulfbismuthite)
H: Sulfosalze mit SnS als Vorbild
C: Nur mit [Blei] (Pb)

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, Kanton/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

Other languages

German

Philrothit

English

Philrothite

Russian

Филротит

CNMNC (IMA)-Number

IMA 2013-066

CNMNC symbol

Symbol

Phr

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

German pages

 DeWikiPedia - search for: Philrothit
Google-Bilder-Suche - search for: Philrothit
Mineralienatlas.de (Forum) - 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
Strahlen.org - search for: Philrothite

Russian pages

 Webmineral.ru - search for: Филротит

Mineral Dealer

German pages

 hausen - Mineralgroßhandel - search for: Philrothit
Crystal-Treasure.com - search for: Philrothit
Bosse - search for: Philrothit
Edelsteine Neuburg - Gundolf Fischer - search for: Philrothit
Geolitho marketplace, by and for collectors - search for: Philrothit

Locations with GPS information