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Ralphcannonite

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Ralph Cannon
Formula:
AgZn2TlAs2S6
System:
Tetragonal
Colour:
Black
Lustre:
Metallic
Name:
Named for Ralph Cannon, Technical Head of the Lengenbach Research Community and Lengenbach minerals expert.
This page provides mineralogical data about Ralphcannonite.


Classification of Ralphcannonite

Approved
Approval Year:
2014

Physical Properties of Ralphcannonite

Metallic
Colour:
Black

Chemical Properties of Ralphcannonite

Formula:
AgZn2TlAs2S6
Elements listed in formula:
Analytical Data:
From type description: Electron microprobe analyses, empirical formula based on 12 atoms per formula unit
Cu (2.01)(6)
Ag (8.50)(16)
Zn (10.94)(20)
Fe (3.25)(8)
Hg (7.92)(12)
Tl (24.58)(26)
As (18.36)(19)
Sb (0.17)(4)
S (24.03)(21)
total (99.76)(71)

Crystallography of Ralphcannonite

Crystal System:
Tetragonal
Class (H-M):
4 2m - Scalenohedral
Space Group:
I4 2m
Space Group Setting:
I4 2m
Cell Parameters:
a = 9.861(2) Å, c = 11.125(3) Å
Ratio:
a:c = 1 : 1.128
Unit Cell Volume:
V 1081.8 ų
Z:
4
Morphology:
Equant, isometric to prismatic crystals, up to 50 μm.
X-Ray Powder Diffraction Data:
d-spacingIntensity
4.100(85)
3.471(40)
3.118(17)
2.954(100)
2.656(20)
2.583(17)
2.465(24)
2.460(39)
Comments:
From Type Description.

Type Occurrence of Ralphcannonite

General Appearance of Type Material:
Metallic black equant, isometric to prismatic crystals, up to 50 μm.
Place of Conservation of Type Material:
Type material is deposited in the mineralogical collections of the Museo di Storia Naturale, Universita` di Firenze, Via La Pira 4, Firenze, Italy, catalogue number 3145/I
Empirical Formula:
Ag0.63(2)Cu0.25(2)Zn1.35(5)Fe0.47(1)Hg0.32(2)Tl0.97(3)[As1.97(6)Sb0.01(1)]Σ1.98(5)S6.03(8)
Associated Minerals at Type Locality:

Relationship of Ralphcannonite to other Species

Other Members of Group:
ArsiccioiteAgHg2Tl(As,Sb)2S6
FerrostalderiteCuFe2TlAs2S6
RouthieriteTl(Cu,Ag)(Hg,Zn)2(As,Sb)2S6
StalderiteTl(Cu,Ag)(Zn,Fe,Hg)2(As,Sb)2S6

Other Names for Ralphcannonite

Name in Other Languages:

Other Information

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

References for Ralphcannonite

Reference List:
Bindi, L., Biagioni, C., Raber, T., Roth, P. and Nestola, F. (2015) Ralphcannonite, IMA 2014-077. CNMNC Newsletter No. 23, February 2015, page 56; Mineralogical Magazine, 79, 51-58.

Bindi, L., Biagioni, C., Raber, T., Roth, P., Nestola, F. (2015): Ralphcannonite, AgZn2TlAs2S6, a new mineral of the routhierite isotypic series from Lengenbach, Binn Valley, Switzerland. Mineralogical Magazine, 79, 1089-1098.

Internet Links for Ralphcannonite

mindat.org URL:
https://www.mindat.org/min-46522.html
Please feel free to link to this page.

Localities for Ralphcannonite

This 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.
(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? 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.
Switzerland (TL)
 
  • Wallis (Valais)
    • Binn Valley
      • Fäld (Imfeld; Im Feld; Feld)
Bindi, L., Biagioni, C., Raber, T., Roth, P. and Nestola, F. (2015) Ralphcannonite, IMA 2014-077. CNMNC Newsletter No. 23, February 2015, page 56; Mineralogical Magazine, 79, 51-58; Bindi, L., Biagioni, C., Raber, T., Roth, P., Nestola, F. (2015): Ralphcannonite, AgZn2TlAs2S6, a new mineral of the routhierite isotypic series from Lengenbach, Binn Valley, Switzerland. Mineralogical Magazine, 79, 1089-1098.
Mineral and/or Locality  
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