Moeloite Mineral Data

General Moeloite Information

Chemical Formula:

Pb6Sb6S14(S3)

Composition:

Molecular Weight = 2,518.82 gm

Antimony 29.00 % Sb

Lead 49.36 % Pb

Sulfur 21.64 % S

______

100.00 %

Empirical Formula:

Pb₆Sb₆S₁₇

Environment:

Small cavities in marble.

IMA Status:

Approved IMA 2002, Dana # Added

Locality:

Ceragiola marble quarry near Seravezza, Tuscany, Italy. Link to MinDat.org Location Data.

Name Origin:

Named for Yves Moelo who synthesized and characterized the synthetic material prior to the discovery of the mineral.

Synonym:

IMA1998-045

Moeloite Image

Images:

Moeloite

Comments: Dark gray, metallic grains of moelite on white dolomite.
Location: Cava Ceragiola, Seravezza, Lucca, Italy. Scale: Picture size 2 cm.
© Dave Barthelmy

Moeloite Crystallography

Axial Ratios:

a:b:c =3.794:1:5.7064

Cell Dimensions:

a = 15.328, b = 4.04, c = 23.054, Z = 2; V = 1,427.62 Den(Calc)= 5.86

Crystal System:

Orthorhombic - DisphenoidalH-M Symbol (2 2 2) Space Group: P 2₁221

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 3.427(1)(403), 2.017(0.8)(614,020), 2.753(0.75),2.779(0.75)(016,314), 2.844(0.75)(503,215), 3.047(0.75)(312,214), 3.724(0.75)(106,112), 1.733(0.5)(0.1.12,618,2.02.422(0.5),

Crystal Structure:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
Keyboard
S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
P - Polyhedra On/Off
B - Bonds On/Off
Help on Above

Orlandi P , Meerschaut A , Palvadeau P , Merlino S , European Journal of Mineralogy , 14 (2002) p.599-606, Lead-antimony sulfosalts from Tuscany (Italy). V. Definition and crystal, structure of moeloite, Pb6Sb6S14(S3), a new mineral from the Ceragiola, marble quarry, Locality: Tuscany, Italy

Physical Properties of Moeloite

Color:

Grayish black, Brownish red.

Diaphaneity:

Opaque

Fracture:

Flexible - Flexible fragments.

Habit:

Acicular - Occurs as needle-like crystals.

Habit:

Plumose - "Mica-like" minerals forming aggregates of plume-like forms.

Luster:

Metallic

Streak:

brown

Optical Properties of Moeloite

RL Anisotrophism:

Moderate.

RL Bireflectance:

Weak.

RL Color:

White with rare red internal reflections in oil.

RL Pleochroism:

None.

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Moeloite in Air**
λ	R₁	R₂	∑ R₁(λ)	∑ R₂(λ)
470 nm	40.00	37.80
546 nm	38.80	36.50
589 nm	38.60	36.70
650 nm	36.50	34.70

**Standardized Intensity (100%) Reflection Spectra of Moeloite in Oil**
λ	R₁	R₂	∑ R₁(λ)	∑ R₂(λ)
470 nm	26.60	24.20
546 nm	24.90	22.80
589 nm	23.40	21.40
650 nm	21.20	20.10

**Calculated Relative Intensity Colors of Moeloite in Air**
Relative Intensity	0%	30%	60%	90%	100%	120%	150%	180%	210%	240%	250%
R₁
R₂

**Calculated Relative Intensity Colors of Moeloite in Oil**
Relative Intensity	0%	50%	100%	150%	200%	250%	300%	350%	400%	420%
R₁
R₂

Calculated Properties of Moeloite

Electron Density:

Bulk Density (Electron Density)=4.98 gm/cc
note: Specific Gravity of Moeloite =5.86 gm/cc.

Fermion Index:

Fermion Index = 0.11
Boson Index = 0.89

Photoelectric:

PE_Moeloite= 993.49 barns/electron
U=PE_Moeloite x rElectron Density=4,946.28 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Moeloite is Not Radioactive

Moeloite Classification

Dana Class:

03.04.08.03 (03)Sulfides - Sulfosalts

(03.04)where z/y > 3 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals

(03.04.08)Dana Group

03.04.08.01 Wittichenite Cu3BiS3 P 2₁2₁2₁ 2 2 2

03.04.08.02 Skinnerite Cu3SbS3 P 2₁/c 2/m

03.04.08.03 Moeloite! Pb6Sb6S14(S3) P 2₁221 2 2 2

Strunz Class:

02.HC.25 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf

02.H - Sulfosalts of SnS Archetype

02.HC -With only Pb

02.HC.25 Moeloite! Pb6Sb6S14(S3) P 2₁221 2 2 2

Other Moeloite Information

References:

NAME( AmMin, Vol 88, p 477) PHYS. PROP.(AmMin, Vol 88, p 477) OPTIC PROP.(AmMin, Vol 88, p 477)

See Also:

Links to other databases for Moeloite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info

Search for Moeloite using:

[AOL] [Bing] [Dog Pile] [GeoScienceWorld] [HotBot] [Ixquick] [Lycos] [MAMMA] [Scirus] [Teoma] [WebCrawler] [Wikipedia] [YAHOO]

Visit our Advertisers for Moeloite :

A Bijoux Google Search for Moeloite
Adam's Minerals Google Search for Moeloite
Cape Minerals Google Search for Moeloite
Dakota Matrix Minerals Google Search for Moeloite
Excalibur Mineral Corp. Google Search for Moeloite
Exceptional Minerals Google Search for Moeloite
John Betts Fine Minerals Search for Moeloite
McDougall Minerals Google Search for Moeloite
Mineral News Website Link
Rock and Mineral Shows Google Search for Moeloite
Weinrich Minerals, Inc. Google Search for Moeloite

Ask about Moeloite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Español

Print or Cut-and-Paste your Moeloite Specimen Label here :

Moeloite

Pb6Sb6S14(S3)
Dana No: 03.04.08.03 Strunz No: 02.HC.25
Locality:

Notes: