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Andreadiniite

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About AndreadiniiteHide

Formula:
CuHgAg7Pb7Sb24S48
Lustre:
Metallic
Crystal System:
Monoclinic
Name:
Named in honor of Andrea Dini (b. 1966), geologist with the Italian National Research Council, Institute of Geosciences and Earth Resources, for "his contributions to the knowledge of ore deposits from Tuscany and, in particular, the ore geology and mineralogy of Hg ores from Apuan Alps."
This page provides mineralogical data about Andreadiniite.


Classification of AndreadiniiteHide

Approved
Approval Year:
2014
First Published:
2018

Physical Properties of AndreadiniiteHide

Metallic

Optical Data of AndreadiniiteHide

Type:
Anisotropic
Anisotropism:
weak, gray to bluish-gray
Reflectivity:
470nmR1=34.8%R2= 36.4%
546nmR1=33.5%R2= 35.1%
589nmR1=32.9%R2= 35.0%
650nmR1=31.8%R2= 32.4%

Reflectance graph
Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. Peak reflectance is 36.4%.
R1 shown in black, R2 shown in red
Colour in reflected light:
white, with a slightly yellow-bronze tint
Pleochroism:
Not Visible

Chemical Properties of AndreadiniiteHide

Formula:
CuHgAg7Pb7Sb24S48

Crystallography of AndreadiniiteHide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P21/b
Setting:
P21/c
Cell Parameters:
a = 19.0982(12) Å, b = 17.0093(11) Å, c = 13.0008(10) Å
β = 90.083(4)°
Ratio:
a:b:c = 1.123 : 1 : 0.764
Unit Cell V:
4223.3 ų
Z:
2

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
3.719(ms)
3.406(s)
3.277(s)
2.885(s)
2.740(ms)
2.263(ms)
2.055(s)
1.788(s)
Comments:
From Type Description.

Type Occurrence of AndreadiniiteHide

General Appearance of Type Material:
black anhedral grains, up to some mm in size
Place of Conservation of Type Material:
Type material is deposited in the collections of the Museo di Storia Naturale, Universita` di Pisa, Via Roma 79, Calci (Pisa), Italy, catalogue number 19688
Reference:
Biagioni, C., Moëlo, Y., Orlandi, P., Paar, W.H. (2018) Lead-antimony sulfosalts from Tuscany (Italy). XXIII. Andreadiniite, CuAg7HgPb7Sb24S48, a new oversubstituted (Cu,Hg)-rich member of the andorite homeotypic series from the Monte Arsiccio mine, Apuan Alps. European Journal of Mineralogy: 30: 1021-1035.

Synonyms of AndreadiniiteHide

Relationship of Andreadiniite to other SpeciesHide

Other Members of this group:
Andorite IVPb18Ag15Sb47S96Mon. 2 : P2
Andorite VIAgPbSb3S6Orth. mm2 : Pmn21
ArsenquatrandoriteAg17.6Pb12.8Sb38.1As11.5S96Mon. 2/m : P21/b
AschamalmitePb6Bi2S9Mon. 2/m
Clino-oscarkempffiteAg15Pb6Sb21Bi18S72Mon. 2/m : P21/b
ErzwiesiteAg8Pb12Bi16S40Orth. mmm (2/m 2/m 2/m) : Pbcn
EskimoiteAg7Pb10Bi15S36Mon.
FizélyiteAg5Pb14Sb21S48 Mon. 2/m
GustaviteAgPbBi3S6Orth. mmm (2/m 2/m 2/m)
HeyrovskýitePb6Bi2S9Orth. mmm (2/m 2/m 2/m) : Cccm
JasrouxiteAg16Pb4(Sb24As16)S72Tric. 1 : P1
LillianitePb3-2xAgxBi2+xS6Orth. mmm (2/m 2/m 2/m)
OscarkempffiteAg10Pb4(Sb17Bi9)S48Orth. mm2
OurayiteAg3Pb4Bi5S13Orth.
OyoniteAg3Mn2Pb4Sb7As4S24Mon. 2/m
RamdohritePb5.9Fe0.1Mn0.1In0.1Cd0.2Ag2.8Sb10.8S24Mon. 2/m
RoshchiniteAg19Pb10Sb51S96Orth.
SchirmeritePbAgBi3S6 - Pb3Ag1.5Bi3.5S9Orth.
StaročeskéiteAg0.70Pb1.60(Bi1.35Sb1.35)Σ2.70S6Orth. mmm (2/m 2/m 2/m) : Cmcm
TerrywallaceiteAgPb(Sb,Bi)3S6 Mon. 2/m : P21/b
TreasuriteAg7Pb6Bi15S32Mon.
UchucchacuaiteAgMnPb3Sb5S12Orth. mmm (2/m 2/m 2/m) : Pmmm
UstarasitePb(Bi,Sb)6S10 (?)
VikingiteAg5Pb8Bi13S30Mon. 2/m : B2/m
XilingolitePb3Bi2S6Mon.

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 AndreadiniiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Biagioni, C., Moëlo, Y., Orlandi, P. and Paar, W.H. (2014) Andreadiniite, IMA 2014-049. CNMNC Newsletter No. 22, October 2014, page 1244. Mineralogical Magazine: 78: 1241-1248.
Biagioni, C., Moëlo, Y., Orlandi, P., Paar, W.H. (2018) Lead-antimony sulfosalts from Tuscany (Italy). XXIII. Andreadiniite, CuAg7HgPb7Sb24S48, a new oversubstituted (Cu,Hg)-rich member of the andorite homeotypic series from the Monte Arsiccio mine, Apuan Alps. European Journal of Mineralogy: 30: 1021-1035.

Internet Links for AndreadiniiteHide

Localities for AndreadiniiteHide

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.
Italy (TL)
 
  • Tuscany
    • Lucca Province
      • Apuan Alps
        • Stazzema
          • Sant'Anna di Stazzema
            • Monte Arsiccio Mine
Biagioni, C., Moëlo, Y., Orlandi, P. and Paar, W.H. (2014) Andreadiniite, IMA 2014-049. CNMNC Newsletter No. 22, October 2014, page 1244; Mineralogical Magazine, 78, 1241-1248.
Mineral and/or Locality  
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