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Dantopaite

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Formula:
Cu
 
1.06
Ag
 
4.24
Pb
 
0.9
Bi
 
12.23
S
 
21.89
Te
 
0.11
System:MonoclinicColour:Gray-white
Hardness:3½
Name:The name honors Dr. Dan Topa (University of Salzburg), ore mineralogist and crystallographer.


N = 6 member of Pavonite homologous series.

Classification of Dantopaite

IMA status:Approved 2009
Nickel-Strunz 10th (pending) edition ID:2.JA.05

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
J : Sulfosalts of PbS archetype
A : Galena derivatives with little or no Pb
Dana 8th edition ID:3.8.10.9

3 : SULFOSALTS
8 : 1 < ø < 2
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Type Occurrence of Dantopaite

Type Locality:Erzwies area, Gastein valley, Hohe Tauern, Salzburg, Austria

Physical Properties of Dantopaite

Lustre:Metallic
Diaphaneity (Transparency):Opaque
Colour:Gray-white
Streak:gray
Hardness (Mohs):3½
Hardness (Vickers):VHN50=190 kg/mm2
Density (calculated):6.74 g/cm3

Crystallography of Dantopaite

Crystal System:Monoclinic
Class (H-M):2/m - Prismatic
Space Group:B2/m {B1 1 2/m} {C2/m} {C1 2/m 1}
Space Group Setting:C2/m
Cell Parameters:a = 13.380(3) Å, b = 4.0492(9) Å, c = 18.690(4) Å
β = 105.494(4)°
Ratio:a:b:c = 3.304 : 1 : 4.616
Unit Cell Volume:V 975.79 ų (Calculated from Unit Cell)
Z:1
Morphology:Isolated grains intimately intergrown with pavonite or benjaminite or both
X-Ray Powder Diffraction:
d-spacingIntensity
3.578 (58)
3.452 (90)
3.331 (36)
3.301 (40)
2.861 (100)
2.225 (24)
2.025 (25)
2.013 (24)

Optical Data of Dantopaite

Type:Anisotropic
Anisotropism:Distinct
Bireflectance:greyish blue to brownish grey
Pleochroism:Visible
Comments:shades of grey

Chemical Properties of Dantopaite

Formula:
Cu
 
1.06
Ag
 
4.24
Pb
 
0.9
Bi
 
12.23
S
 
21.89
Te
 
0.11
Idealised Formula:
Ag
 
5
Bi
 
13
S
 
22
Essential elements:Ag, Bi, Cu, Pb, S, Te
All elements listed in formula:Ag, Bi, Cu, Pb, S, Te

Relationship of Dantopaite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
2.JA.05eBenjaminite
(Ag,Cu)
 
3
(Bi,Pb)
 
7
S
 
12
2.JA.05gBorodaevite
Ag
 
5
(Bi,Pb,Fe)
 
8
(Sb,Bi)
 
2
S
 
17
2.JA.05aCupropavonite
AgCu
 
2
PbBi
 
5
S
 
10
2.JA.05aKitaibelite
Ag
 
10
PbBi
 
30
S
 
51
2.JA.05iLivingstonite
HgSb
 
4
S
 
8
2.JA.05dMakovickyite
Ag
 
1.5
Bi
 
5.5
S
 
9
2.JA.05fMummeite
(Cu,Ag)
 
3-4
(Bi,Pb)
 
7-8
S
 
13
2.JA.05aPavonite
(Ag,Cu)(Bi,Pb)
 
3
S
 
5
2.JA.05bGrumiplucite
HgBi
 
2
S
 
4
2.JA.05hMozgovaite
PbBi
 
4
(S,Se)
 
7
2.JA.05dCupromakovickyite
Cu
 
8
Pb
 
4
Ag
 
2
Bi
 
18
S
 
36
2.JA.05cKudriavite
(Cd,Pb)Bi
 
2
S
 
4
2.JA.05aCupromakopavonite
Ag
 
3
Cu
 
8
Pb
 
4
Bi
 
19
S
 
38
2.JA.10aCuprobismutite
Cu
 
8
AgBi
 
12
S
 
24
2.JA.10cHodrušite
Cu
 
8
Bi
 
12
S
 
22
2.JA.10ePadĕraite
Cu
 
5.9
Ag
 
1.3
Pb
 
1.6
Bi
 
11.2
S
 
22
2.JA.10dPizgrischite
Cu
 
17
Bi
 
17
S
 
35
2.JA.10bKupčíkite
(Cu,Fe)
 
4
Bi
 
5
S
 
10
2.JA.15Schapbachite
AgBiS
 
2
2.JA.15Cuboargyrite
AgSbS
 
2
2.JA.20Bohdanowiczite
AgBiSe
 
2
2.JA.20Matildite
AgBiS
 
2
2.JA.20Volynskite
AgBiTe
 
2

Other Names for Dantopaite

Synonyms:
IMA2008-058
Other Languages:

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 Dantopaite

Reference List:

- +
Makovicky, E., Paar, W.H., Putz, H., Zagler, G. (2010): Dantopaite, Ag5Bi13S22, the 6P natural member of the pavonite homologous series, from Erzwies, Austria. Canadian Mineralogist, 48, 467-481.

Internet Links for Dantopaite

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    • Localities for Dantopaite

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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.
    Austria
     
    • Salzburg
      • Hohe Tauern
        • Gastein valley
    		Makovicky, E., Paar, W.H., Putz, H., Zagler, G. (2010): Dantopaite, Ag5Bi13S22, the 6P natural member of the pavonite homologous series, from Erzwies, Austria. Canadian Mineralogist, 48, 467-481.
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