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Cuproneyite

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Formula:
Cu7Pb27Bi25S68
System:
Monoclinic
Hardness:
3
Name:
For the mineral neyite and its copper content.
Cu analogue of neyite.

Classification of Cuproneyite

Approved
Approval Year:
2008
2.JB.25i

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
J : Sulfosalts of PbS archetype
B : Galena derivatives, with Pb
3.5.1.2

3 : SULFOSALTS
5 : 2.5 < ø < 3
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http://www.mindat.org/min-39287.html
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Type Occurrence of Cuproneyite

General Appearance of Type Material:
irregular or short prismatic grains, of up to 300 μm in length, intergrown with lamellae and irregular patches of cosalite and Cu–Pb-rich bismuthinite derivatives
Place of Conservation of Type Material:
Department of Mineralogy, Faculty of Geology and Geophysics, University of Bucharest, Romania (catalogue no. CATMIN 22/24).
Geological Setting of Type Material:
polymetallic mineralization related to contact metamorphism (skarn) developed around the Late Cretaceous magmatic complex at Băiţa Bihor

Physical Properties of Cuproneyite

Metallic
Diaphaneity (Transparency):
Opaque
Hardness (Mohs):
3
Hardness (Vickers):
VHN25=222 kg/mm2
Tenacity:
Brittle
Cleavage:
Distinct/Good
good, parallel to the c axis
Parting:
none
Fracture:
Irregular/Uneven
Comment:
fracture is subparallel, perpendicular to the c axis.
Density:
7.113 g/cm3 (Calculated)

Crystallography of Cuproneyite

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
B2/m
Space Group Setting:
C2/m
Cell Parameters:
a = 37.432(8) Å, b = 4.0529(9) Å, c = 43.545(9) Å
β = 108.803°
Ratio:
a:b:c = 9.236 : 1 : 10.744
Unit Cell Volume:
V 6,253.58 ų (Calculated from Unit Cell)
Z:
1
X-Ray Powder Diffraction Data:
d-spacingIntensity
3.735 (96)
3.507 (50)
3.464 (53)
3.347 (84)
2.956 (77)
2.925 (46)
2.867 (100)
2.027 (81)

Optical Data of Cuproneyite

Type:
Anisotropic
Anisotropism:
moderate in air and strong in oil.
Bireflectance:
Bireflectance is perceptible in air and moderate in oil
Colour in reflected light:
greyish white
Internal Reflections:
none
Pleochroism:
Visible
Comments:
greyish white with faint bluish tint (darkest position) to greyish white with faint yellowish tint (lightest position)

Chemical Properties of Cuproneyite

Formula:
Cu7Pb27Bi25S68
All elements listed in formula:

Relationship of Cuproneyite to other Species

2.JB.05DiaphoriteAg3Pb2Sb3S8
2.JB.10CosalitePb2Bi2S5
2.JB.15FreieslebeniteAgPbSbS3
2.JB.15MarriteAgPbAsS3
2.JB.20CannizzaritePb4Bi6S13
2.JB.20WittitePb9Bi12(S,Se)27
2.JB.25aJunoiteCu2Pb3Bi8(S,Se)16
2.JB.25iNeyiteAg2Cu6Pb25Bi26S68
2.JB.25cNordströmiteCuPb3Bi7(Se4S10)
2.JB.25gNuffielditeCu1.4Pb2.4Bi2.4Sb0.2S7
2.JB.25dProuditeCuPb7.5Bi9.33(S,Se)22
2.JB.25hWeibullitePb5Bi8Se7S11
2.JB.25bFelbertaliteCu2Pb6Bi8S19
2.JB.25jRouxeliteCu2HgPb23Sb27S65.5
2.JB.25fÁngelaiteCu2AgPbBiS4
2.JB.30aGeocronitePb14(Sb,As)6S23
2.JB.30aJordanitePb14(As,Sb)6S23
2.JB.30bKirkiitePb10Bi3As3S19
2.JB.30cTsugaruitePb4As2S7
2.JB.35cPillaitePb9Sb10S23ClO0.5
2.JB.35aZinkenitePb9Sb22S42
2.JB.35bScainiitePb14Sb30S54O5
2.JB.35dPellouxite(Cu,Ag)Pb10Sb12S27O(Cl,S)0.6
2.JB.35fTubuliteAg2Pb22Sb20S53
2.JB.35eChovanitePb15-2xSb14+2xS36Ox (x ~ 0.2)
2.JB.40bAschamalmitePb6Bi2S9
2.JB.40aBursaitePb5Bi4S11 (?)
2.JB.40bEskimoiteAg7Pb10Bi15S36
2.JB.40aFizélyiteAg5Pb14Sb21S48
2.JB.40aGustaviteAgPbBi3S6
2.JB.40aLillianitePb3-2xAgxBi2+xS6
2.JB.40cOurayiteAg3Pb4Bi5S13
2.JB.40aRamdohritePb5.9Fe0.1Mn0.1In0.1Cd0.2Ag2.8Sb10.8S24
2.JB.40aRoshchiniteAg19Pb10Sb51S96
2.JB.40dSchirmeritePbAgBi3S6 - Pb3Ag1.5Bi3.5S9
2.JB.40aTreasuriteAg7Pb6Bi15S32
2.JB.40aUchucchacuaiteAgMnPb3Sb5S12
2.JB.40eUstarasitePb(Bi,Sb)6S10 (?)
2.JB.40aVikingiteAg5Pb8Bi13S30
2.JB.40aXilingolitePb3Bi2S6
2.JB.40bHeyrovskýitePb6Bi2S9
2.JB.40UM1988-05-S:AgBiCuHgPb(Hg,Ag,Cu,Pb)5Pb5Bi11S27
2.JB.40UM1988-06-S:AgBiCuHgPb(Pb,Hg)12(Cu,Ag)3(Bi,Sb)10(S,Te)27
2.JB.40aAndorite IVPb18Ag15Sb47S96
2.JB.55GratonitePb9As4S15
2.JB.60MarrucciiteHg3Pb16Sb18S46
2.JB.65VurroitePb20Sn2(Bi,As)22S54Cl6

Other Names for Cuproneyite

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 Cuproneyite

Reference List:
Ilinca, Gh., Topa, D., Makovicky, E. & Zagler, G. (2012): Cuproneyite – Cu7Pb27Bi25S68, a new mineral from Băiţa Bihor, Romania. 20th General Meeting of the IMA (IMA2010), Budapest, Hungary, August 21-27, CD of Abstracts, p. 497.

Ilinca, Gh., Makovicky, E., Topa, D., & Zagler, G. (2010): Cuproneyite, Cu7Pb27Bi25S68, a new mineral from Băiţa Bihor, Romania. Can. Mineral. 50, 353-370.

Internet Links for Cuproneyite

Localities for Cuproneyite

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.
Romania (TL)
 
  • Bihor Co.
    • Nucet
Ilinca, Gh., Makovicky, E., Topa, D., & Zagler, G. (2010): Cuproneyite, Cu7Pb27Bi25S68, a new mineral from Băiţa Bihor, Romania. Can. Mineral. 50, 353-370.
Mineral and/or Locality  
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