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Boscardinite

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Boscardinit
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Boscardinit
prismatischer Boscardinit, Monte Arsiccio Mine, Stazzema, Toskana, Italien; BB < 1 mm, analysiert
Copyright: MinTreasure.com (Carsten Slotta); Contribution: openpit
Location: Italien/Toskana (Toscana)/Lucca, Provinz/Apuanische Alpen/Stazzema/Sant'Anna di Stazzema/Miniera di Monte Arsiccio
Mineral: Boscardinite
Image: 1577792102
License: Usage for Mineralienatlas project only
Boscardinit

prismatischer Boscardinit, Monte Arsiccio Mine, Stazzema, Toskana, Italien; BB < 1 mm, analysiert

Copyright: MinTreasure.com (Carsten Slotta)
Contribution: openpit 2019-12-31
Locality: Miniera di Monte Arsiccio / Sant'Anna di Stazzema / Stazzema / Apuanische Alpen / Lucca, Provinz / Toskana (Toscana) / Italien

Collectors Summary

Color grau
Streak color schwarz
Lustre Metallglanz
Crystal System triklin, P1

Additional information / Summary

Das Typmaterial stammt von der Sant`Olga - Sohle (525 m ü. NN) der Monte Arsiccio Mine, Sant'Anna di Stazzema, Toskana, Italien.

Chemism

Chemical formula

TlPb4(Sb7As2)Σ9S18

Empirical formula (analysis)

Ag0.36Tl1.23Pb2.92(Sb7.09As2.25)Σ9.34S17.76

Additional chem. information

Tl-Sb Analog (homeotype) von Baumhauerit

Chemical composition

Antimon, Arsen, Blei, Thallium, Schwefel

Unit weight: 2496.6132363 u; Number of atoms in the formula: 31.61

Info

Empirical formula:

Ag0.36Tl1.23Pb2.92(Sb7.09As2.25)S17.76

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Sulfur

S

22.81

17.76

56.18

32.0655000

569.4832800

Arsenic

As

6.75

2.25

7.12

74.9216020

168.5736045

Silver

Ag

1.56

0.36

1.14

107.8682200

38.8325592

Antimony

Sb

34.58

7.09

22.43

121.7601000

863.2791090

Thallium

Tl

10.07

1.23

3.89

204.3833200

251.3914836

Lead

Pb

24.23

2.92

9.24

207.2100000

605.0532000

Analysis wt%

S : 22.14, As : 5.78, Sb : 35.25, Pb : 23.36, Tl : 9.72, Ag : 1.48, Se : 0.04, Total : 97.77; WDX (Orlandi et al. (2012))

Strunz 9th edition incl. updates

2.HC.05b

2: Sulfide und Sulfosalze (Sulfide, Selenide, Telluride, Arsenide, Antimonide, Bismutide, Sulfoarsenide, Sulfoantimonide, Sulfobismuthide)
H: Sulfosalze mit SnS als Vorbild
C: Nur mit [Blei] (Pb)
05b:

Lapis Classification

II/E.14-055

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)

Classification by Hölzel

2.GC.165

2: SULFIDES
G: SnS Archetype
C:
1: Sartorite Series

IMA status

anerkannt - IMA Commission on New Minerals, Nomenclature and Classification (CNMNC), März - April 2011 (Newsletter 9)

Mineral status

anerkanntes Mineral

Optical Properties

Color

grau

Streak color

schwarz

Change in color

im Auflicht weiß

Diaphaneity (Transparency)

opak

Lustre

Metallglanz

Pleochroism

keiner

Bireflectance

schwach

Anisotropism

schwach, in Schatten von grau

Reflectivity: (Lambda nm) ↓, ↑, Ø

(470) 33.80, 39.30, 36.55
(546) 32.10, 38.00, 35.05
(589) 31.20, 36.90, 34.05
(650) 29.70, 35.30, 32.50

Reflection chart Boscardinite

Reflectivity Ø

34.54

Crystallography

Crystal System

triklin

Class (H-M)

1

Space Group number

2

Space Group

P1

Cell parameters a (Å)

8.093

Cell parameters b (Å)

8.761

Cell parameters c (Å)

22.497

Cell parameters a/b or c/a

0.924

Cell parameters c/b

2.568

Cell parameters α

90.87

Cell parameters β

97.25

Cell parameters γ

90.80

Z

2

Volume (ų)

1581.962

Crystal structure

Struktur bestimmt

Crystal Structure 3D

Open larger view

Physical Properties

Density (g/cm³)

5.355 (berechnet)

5.241 ( ρ calc. Mineralienatlas )

Tenacity

spröde

(Co-)Type locality

(Co-)Type locality

Italien/Toskana (Toscana)/Lucca, Provinz/Apuanische Alpen/Stazzema/Sant'Anna di Stazzema/Miniera di Monte Arsiccio

Type material

Museo di Storia Naturale e del Territorio, Università di Pisa, Calci (PI), Italy

Collection number of type material

19349

Paragenesis of type material

Quarz, Zinkenit

Preface

Name from

Der Name wurde zu Ehren von Matteo Boscardin (* 1939) für seinen Beitrag zur regionalen Mineralogyie von Italien vergeben.

Author (Name, Year)

Orlandi, P., Biagioni, C., Bonaccorsi, E., Moëlo, Y., Paar, W. (2012)

References

Orlandi, P., Biagioni, C., Bonaccorsi, E., Moëlo, Y., Paar, W. - Lead–antimony sulfosalts from Tuscany (Italy). XII. Boscardinite, TlPb4(Sb7As2)Σ=9S18, a new mineral from the Monte Arsiccio mine (Tuscany, Italy): occurrence and crystal structure. Canadian Mineralogist 50 (2012), 235-251

IMA Commission on New Minerals, Nomenclature and Classification (CNMNC), März - April 2011 (Newsletter 9)

Fernando Cámara, G. Diego Gatta, Yulia Uvarova, Olivier C. Gagne, and Dmitriy I. Belakovskiy: New Mineral Names. American Mineralogist Vol. 99, Nr. 10 (2014) S. 2150-2158.

Biagioni, Cristian; Moëlo, Yves: Lead-antimony sulfosalts from Tuscany (Italy). XVIII. New data on the crystal-chemistry of boscardinite. Mineralogical Magazine Vol. 81, No. 1 (2017) S. 47-60. [PREPUBLICATION 19 Feb. 2015]

Other languages

German

Boscardinit

English

Boscardinite

Russian

Боскардинит

CNMNC (IMA)-Number

IMA 2010-079

CNMNC symbol

Symbol

Bcd

Locations with GPS information

IDs

GUSID (Global unique identifier short form) Q3ONQi_4tE2IK2FWFwYQuA
GUID (Global unique identifier) 428D7343-F82F-4DB4-882B-6156170610B8
Database ID 7028