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Ellisite

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Formula:
Tl
 
3
AsS
 
3
System:TrigonalColour:Dark gray
Hardness:2
Name:For Dr. A. J. Ellis, Chemistry Division, DSIR, New Zealand
This page provides mineralogical data about Ellisite.

Classification of Ellisite

IMA status:Approved
Strunz 8th edition ID:2/E.12-40
Nickel-Strunz 10th (pending) edition ID:2.JC.05

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
J : Sulfosalts of PbS archetype
C : Galena derivatives, with Tl
Dana 8th edition ID:3.4.9.1

3 : SULFOSALTS
4 : ø = 3
Hey's CIM Ref.:5.5.2

5 : Sulphosalts - Sulpharsenites and Sulphobismuthites (those containing Sn, Ge,or V are in Section 6)
5 : Sulpharsenites etc. of Tl
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Type Occurrence of Ellisite

Type Locality:Carlin Gold mine, Elko, Lynn District, Eureka Co., Nevada, USA
Place of Conservation of Type Material:Stanford University, California
Year of Discovery:1979
Geological Setting of type material:Carlin type gold deposit

Physical Properties of Ellisite

Lustre:Metallic
Diaphaneity (Transparency):Opaque
Colour:Dark gray
Streak:Light brown with a tinge of orange
Hardness (Mohs):2
Hardness (Vickers):VHN50=36 - 44 kg/mm2
Cleavage:Distinct/Good
Good rhombohedral
Fracture:Hackly
Density (measured):7.10(5) g/cm3
Density (calculated):7.18 g/cm3
Comment:Measured on synthetic material

Crystallography of Ellisite

Crystal System:Trigonal
Class (H-M):3m - Ditrigonal Pyramidal
Space Group:R3m
Cell Parameters:a = 12.324Å, c = 9.647Å
Ratio:a:c = 1 : 0.783
Unit Cell Volume:V 1,268.90 ų (Calculated from Unit Cell)
Z:7
Morphology:Anhedral grains
Comment:Synthetic

Optical Data of Ellisite

Type:Anisotropic
Anisotropism:From blue-purple to red-purple to brownish orange
Colour in reflected light:Light gray with purplish tint
Internal Reflections:Deep red to deep orange-red
Pleochroism:Weak
Comments:Light purplish gray to light pinkish gray

Chemical Properties of Ellisite

Formula:
Tl
 
3
AsS
 
3
Essential elements:As, S, Tl
All elements listed in formula:As, S, Tl

Relationship of Ellisite to other Species

Common Associates:
GoldPyriteChristiteLoránditeGetchellite
RealgarArsenicCarlinite
Related Minerals - Nickel-Strunz Grouping):

- +
2.JC.10Gillulyite
Tl
 
2
(As,Sb)
 
8
S
 
13
2.JC.25eGalenobismutite
PbBi
 
2
S
 
4
2.JC.40aNakaseite
CuAg
 
3
Pb
 
4
Sb
 
12
S
 
24
Related Minerals - Hey's Index Grouping:

- +
5.5.1Lorándite
TlAsS
 
2
5.5.3Imhofite
Tl
 
6
CuAs
 
16
S
 
40
5.5.4Simonite
TlHgAs
 
3
S
 
6
5.5.6Christite
TlHgAsS
 
3
5.5.6Routhierite
Tl(Cu,Ag)(Hg,Zn)
 
2
(As,Sb)
 
2
S
 
6
5.5.7Hutchinsonite
(Tl,Pb)
 
2
As
 
5
S
 
9
5.5.8Wallisite
(Cu,Ag)TlPbAs
 
2
S
 
5
5.5.9Bernardite
Tl(As,Sb)
 
5
S
 
8
5.5.10Vrbaite
Tl
 
4
Hg
 
3
Sb
 
2
As
 
8
S
 
20
5.5.11Rebulite
Tl
 
5
Sb
 
5
As
 
8
S
 
22
5.5.12Gillulyite
Tl
 
2
(As,Sb)
 
8
S
 
13
5.5.13Weissbergite
TlSbS
 
2
5.5.14Rohaite
(Tl,Pb,K)
 
2
Cu
 
8.7
Sb
 
2
S
 
4
5.5.15Vaughanite
TlHgSb
 
4
S
 
7
5.5.16Chalcothallite
Tl
 
2
(Cu,Fe)
 
6
SbS
 
4
5.5.17Pierrotite
Tl
 
2
Sb
 
6
As
 
4
S
 
16
5.5.18Parapierrotite
Tl(Sb,As)
 
5
S
 
8
5.5.19Criddleite
TlAg
 
2
Au
 
3
Sb
 
10
S
 
10
5.5.20Chabournéite
Tl
 
21-x
Pb
 
2x
(Sb,As)
 
91-x
S
 
147
 (x = 0-17.5)

Other Names for Ellisite

Synonyms:
IMA1977-041
Other Languages:
German:Ellisit
Russian:Эллисит
Simplified Chinese:硫砷铊矿
Spanish:Ellisita

Other Information

Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Ellisite

Reference List:

- +
American Mineralogist: 64: 701-707.

Zeitschrift für Kristallographie: 151: 249-254.

Internet Links for Ellisite

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  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Ellisite details from Handbook of Mineralogy (PDF)
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    • Localities for Ellisite

    The map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
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    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    China
     
    • Yunnan Province
      • Chuxiong Autonomous Prefecture
        • Nanhua Co.
    		Zhang Zhong, Zhang Baogui, Hu Jing, Yao Linbo, and Tian Yifu (2007): Science in China, Series D (Earth Sciences), 50(3), 359-370.
    USA
     
    • Nevada
      • Eureka Co.
        • Lynn District
          • Elko
    		Am Min 64 (1979), 701; Min.Rec.:20:469.
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