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Richardsollyite

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R.H. Solly
Formula:
TlPbAsS3
Colour:
grey-black
Lustre:
Metallic
Crystal System:
Monoclinic
Name:
The name honors Richard Harrison Solly (4 September 1851, London, England - 5 December 1925, Bournemouth, England), a British autodidact, who carefully described eight new mineral species from Lengenbach between 1901 and 1912. He can be considered the most successful scientist of the first flourishing period of Lengenbach investigations, at the dawn of the twentieth century.
New structure type. Chemically similar to edenharterite, enneasartorite, hendekasartorite, hutchinsonite, and incomsartorite.

The Pb analogue of christite.

The structure has [Pb(AsS3)] layers located as per the (100) planes; the layers sandwich Tl+ cations.

Isostructural with synthetic ABCX3 compounds (A = K, Rb, Cs; B = Eu, Ba; C = As, Sb; X = S, Se).


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Classification of RichardsollyiteHide

Approved, Pending publication
Approval Year:
2016

Pronounciation of RichardsollyiteHide

Pronounciation:
PlayRecorded byCountry
Jolyon & Katya RalphUnited Kingdom

Physical Properties of RichardsollyiteHide

Metallic
Colour:
grey-black

Optical Data of RichardsollyiteHide

Type:
Anisotropic
Anisotropism:
distinct, greyish-white to bluish rotation tints
Reflectivity:
471.1nmR1=27.9%R2=29.8%
548.3nmR1=27.8%R2=31.0%
586.6nmR1=27.3%R2=30.8%
652.3nmR1=27.0%R2=30.5%

Reflectance graph
Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. Peak reflectance is 31.0%.
R1 shown in black, R2 shown in red
Colour in reflected light:
grey
Internal Reflections:
bright-red

Chemical Properties of RichardsollyiteHide

Formula:
TlPbAsS3

Crystallography of RichardsollyiteHide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P21/b
Setting:
P21/c
Cell Parameters:
a = 8.8925(2) Å, b = 8.4154(2) Å, c = 8.5754(2) Å
β = 108.665(3)°
Ratio:
a:b:c = 1.057 : 1 : 1.019
Unit Cell V:
607.98 ų (Calculated from Unit Cell)

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
4.23(80)
3.875(70)
3.762(100)
3.278(70)
2.931(70)
2.714(70)
2.622(80)

Type Occurrence of RichardsollyiteHide

General Appearance of Type Material:
crystals up to 750 μm in diameter
Place of Conservation of Type Material:
Mineralogical collections of the Musée Cantonal de Géologie, UNIL-Anthropole, Dorigny, CH-1015 Lausanne, Switzerland (catalogue number MGL n. 080126)
Associated Minerals at Type Locality:

Synonyms of RichardsollyiteHide

Other Language Names for RichardsollyiteHide

Common AssociatesHide

HutchinsoniteTlPbAs5S9

Other InformationHide

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 RichardsollyiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Meisser, N., Roth, P., Nestola, F., Biagioni, C., Bindi, L., Robyr, M. (2016) Richardsollyite, IMA 2016-043. CNMNC Newsletter No. 33, October 2016, page 1138; Mineralogical Magazine: 80: 1135–1144
Meisser, N., Roth, P. (2016) Mining for new minerals: the Lengenbach deposit (Switzerland). Talk given at the conference "New Minerals and Mineralogy in the 21th Century - International scientific symposium Jáchymov 2016", Jáchymov, Czech Republic, September 3-5, 2016. [Photo is given in conference abstract volume, p. 56, labeled as "IMA 2016-043"]
Meisser, N. & Roth, P. (2017): Richardsollyit, eine erstaunliche neue Mineralart. Schweizer Strahler 51 (1), 36-38 (in German and French).
Meisser, N., Roth, P., Nestola, F., Biagioni, C., Bindi, L., Robyr, M. (2017): Richardsollyite, TlPbAsS3, a new sulfosalt from the Lengenbach quarry, Binn Valley, Switzerland. European Journal of Mineralogy: 29 (in press); http://forum.amiminerals.it/viewtopic.php?f=5&t=13732 (2017)

Internet Links for RichardsollyiteHide

Localities for RichardsollyiteHide

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.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Switzerland (TL)
 
  • Wallis (Valais)
    • Binn Valley
      • Fäld (Imfeld; Im Feld; Feld)
Meisser, N. & Roth, P. (2016): Mining for new minerals: the Lengenbach deposit (Switzerland). Talk given at the conference "New Minerals and Mineralogy in the 21th Century - International scientific symposium Jáchymov 2016", Jáchymov, Czech Republic, September 3-5, 2016; Meisser, N. & Roth, P. (2017): Richardsollyit, eine erstaunliche neue Mineralart. Schweizer Strahler 51 (1), 36-38 (in German and French).
Mineral and/or Locality  
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