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Challacolloite

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Formula:
KPb
 
2
Cl
 
5
System:MonoclinicColour:Colourless to white
Hardness:2 - 3
Name:Named after its type locality
Isostructural with:Hephaistosite


The K analogue of hephaistosite.

Classification of Challacolloite

IMA status:Approved 2005
Nickel-Strunz 10th (pending) edition ID:3.AA.55

3 : HALIDES
A : Simple halides, without H2O
A : M:X = 1:1, 2:3, 3:5, etc.
Dana 8th edition ID:11.4.2.1

11 : HALIDE COMPLEXES
4 : AmBX5·xH2O
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Type Occurrence of Challacolloite

Type Locality:Lolon Mine (Challacollo Mine), Challacollo, El Tamarugal Province, Tarapacá Region, Chile
General Appearance of Type Material:thin crusts
Geological Setting of type material:hydrothermal phases
Associated Minerals at type locality:
Cotunnite

Occurrences of Challacolloite

Geological Setting:as a product of fumarole activity, on cavernous leucotephritic lava

Physical Properties of Challacolloite

Lustre:Adamantine
Colour:Colourless to white
Hardness (Mohs):2 - 3
Density (calculated):4.77 g/cm3

Crystallography of Challacolloite

Crystal System:Monoclinic
Class (H-M):2/m - Prismatic
Space Group:P21/b {P1 1 21/b} {P21/c} {P1 21/c 1} {P21/a}
Cell Parameters:a = 8.864Å, b = 7.932Å, c = 12.491Å
β = 90.153°
Ratio:a:b:c = 1.117 : 1 : 1.575
Unit Cell Volume:V 878.2 ų
Z:4
X-Ray Powder Diffraction:
d-spacingIntensity
3.686 (100)
3.609 (49)
2.669 (42)
8.855 (39)
3.961 (31)
Comments:Format: d/Å (I/%) (hkl)

Optical Data of Challacolloite

Type:Biaxial (+)
RI values: nα = 2.004 nβ = 2.010 nγ = 2.024
2V:Calculated: 67°
Maximum Birefringence:δ = 0.020

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Very High

Chemical Properties of Challacolloite

Formula:
KPb
 
2
Cl
 
5
Simplified for copy/paste:KPb2Cl5
All elements listed in formula:Cl, K, Pb

Relationship of Challacolloite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
3.AA.05Marshite
CuI
3.AA.05Miersite
(Ag,Cu)I
3.AA.05Nantokite
CuCl
3.AA.05UM1999-11:I:CuS
Cu(I,S)
3.AA.10Iodargyrite
AgI
3.AA.10Tocornalite
(Ag,Hg)I
3.AA.15Bromargyrite
AgBr
3.AA.15Chlorargyrite
AgCl
3.AA.20Carobbiite
KF
3.AA.20Griceite
LiF
3.AA.20Halite
NaCl
3.AA.20Sylvite
KCl
3.AA.20Villiaumite
NaF
3.AA.25Salammoniac
NH
 
4
Cl
3.AA.25UM1998-03-Cl:Tl
TlCl
3.AA.25Lafossaite
Tl(Cl,Br)
3.AA.30Calomel
(Hg
+
2
)Cl
 
2
3.AA.30Kuzminite
(Hg
+
2
)(Br,Cl)
 
2
3.AA.30Moschelite
(Hg
+
2
)I
 
2
3.AA.35Neighborite
NaMgF
 
3
3.AA.40Chlorocalcite
KCaCl
 
3
3.AA.45Kolarite
PbTeCl
 
2
3.AA.50Radhakrishnaite
PbTe
 
3
(Cl,S)
 
2
3.AA.60Hephaistosite
TlPb
 
2
Cl
 
5

Other Names for Challacolloite

Synonyms:
IMA2004-028
Other Languages:
Simplified Chinese:氯钾铅矿
Traditional Chinese:氯鉀鉛礦

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 Challacolloite

Reference List:

- +
J. Schlüter, D. Pohl and S. Britvin (2005): The new mineral challacolloite, KPb2Cl5, the natural occurrence of a technically known laser material. N. Jb. Min. Abh. 182, 95-101.

Mitolo D., Pinto D., Garavelli A., Bindi L. & Vurro F. (2009): The role of the minor substitutions in the crystal structure of natural challacolloite, KPb2Cl5, and hephaistosite, TlPb2Cl5, from Vulcano (Aeolian Archipelago, Italy). Mineralogy and Petrology 96, 121-128.

Internet Links for Challacolloite

Search Engines:
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  • External Links:
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  • Look for Challacolloite on Wikipedia
  • Look for Challacolloite on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
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    Localities for Challacolloite

    The 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. ? 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.
    Chile
     
    • Tarapacá Region
      • El Tamarugal Province
        • Challacollo
    J. Schlüter at al.: N. Jb. Min. Abh. 182(1):95-101 (2005)
    Italy
     
    • Campania
      • Naples Province
        • Somma-Vesuvius Complex
    Schlüter, J., at al., (2005): The new mineral challacolloite, KPb2Cl5, the natural occurrence of a technically known laser material, N. Jb. Min. Abh. 182(1):95-101
    • Sicily
      • Messina Province
        • Eolie Islands (Aeolian Islands)
          • Lipari
            • Vulcano Island
    Mitolo D., Pinto D., Garavelli A., Bindi L. & Vurro F. (2009): The role of the minor substitutions in the crystal structure of natural challacolloite, KPb2Cl5, and hephaistosite, TlPb2Cl5, from Vulcano (Aeolian Archipelago, Italy). Mineralogy and Petrology 96, 121-128.
    Japan
     
    • Kyushu Region
      • Nansei Archipelago
        • Kagoshima Prefecture
          • Mishima village
    Africano, F., Van Rompaey, G., Bernard, A., Le Guern, F. (2002): Deposition of trace elements from high-temperature gases of Satsuma-Iwojima volcano. Earth, Planets and Space, 54, 275-286.
    F. Africano, G. Van Rompaey, A. Bernard, F. Le Guern (2002) Deposition of trace elements from high temperature gases of Satsuma-Iwojima volcano. Earth Planets Space 54, 275-286.
    Russia
     
    • Far-Eastern Region
      • Sakhalinskaya Oblast'
        • Kuril Islands
          • Iturup Island
    • Tkachenko, S.I., Porter, R.P., Khorzhinskii, M.A., Van Bergen, M.D., Shmulovich, K.I., Shteinberg, G.S. (1999): Ore and mineral formation from high-temperature fumarole gases at Kudryavyi volcano, Iturup island, Kuril Islands. Geokhimika, 4, 410-422.
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    Copyright © Jolyon Ralph and Ida Chau 1993-2014. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of thousands of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
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