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Caracolite

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Formula:
Na
 
3
Pb
 
2
(SO
 
4
)
 
3
Cl
System:MonoclinicColour:Colourless, grayish, ...
Hardness:
Member of:Hedyphane Group > Apatite Supergroup
Name:After Caracoles, a town near the type locality of the Beatriz Mine, Sierra Gorda, Atacama, Chile.
This page provides mineralogical data about Caracolite.

Classification of Caracolite

IMA status:Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
Strunz 8th edition ID:6/B.12-60
Nickel-Strunz 10th (pending) edition ID:7.BD.20

7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
B : Sulfates (selenates, etc.) with additional anions, without H2O
D : With only large cations
Dana 8th edition ID:30.3.2.1

30 : ANHYDROUS SULFATES CONTAINING HYDROXYL OR HALOGEN
3 : (AB)5(XO4)3Zq
Hey's CIM Ref.:26.25

26 : Sulphates with Halide
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Type Occurrence of Caracolite

Type Locality:Beatriz Mine, Caracoles, Sierra Gorda District, Antofagasta Province, Antofagasta Region, Chile
General Appearance of Type Material:Crystalline incrustations with pseudohexagonal crystals to 1mm.
Year of Discovery:1886
Associated Minerals at type locality:
PercyliteGalenaBindheimiteAnglesite

Physical Properties of Caracolite

Lustre:Vitreous
Diaphaneity (Transparency):Transparent
Colour:Colourless, grayish, greenish stained; colourless in transmitted light.
Hardness (Mohs):
Cleavage:None Observed
Density (measured):5.1 g/cm3
Comment:Measured density approximate.

Crystallography of Caracolite

Crystal System:Monoclinic
Cell Parameters:a = 19.62Å, b = 7.14Å, c = 9.81Å
β = 120°
Ratio:a:b:c = 2.748 : 1 : 1.374
Unit Cell Volume:V 1,190.14 ų (Calculated from Unit Cell)
Morphology:Occurs as crystalline incrustations. Imperfect crystals to 1 mm apparently hexagonal with a hexagonal pyramid and prism plus a large base.
Twinning:Pseudo-hexagonal trillings, analogous to aragonite. Exhibits complex polysynthetic twinning with rather large extinction angles.
X-Ray Powder Diffraction:
d-spacingIntensity
8.45 (31)
4.03 (31)
3.55 (55)
2.927 (100)
2.876 (45)
2.132 (35)
1.906 (56)

Optical Data of Caracolite

Type:Biaxial (-)
RI values: nα = 1.743 nβ = 1.754 nγ = 1.764
Maximum Birefringence:δ = 0.021

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

Chemical Properties of Caracolite

Formula:
Na
 
3
Pb
 
2
(SO
 
4
)
 
3
Cl
Simplified for copy/paste:Na3Pb2(SO4)3Cl
Essential elements:Cl, Na, O, Pb, S
All elements listed in formula:Cl, Na, O, Pb, S

Relationship of Caracolite to other Species

Member of:Hedyphane Group > Apatite Supergroup
Other Members of Group:

- +
Aiolosite
Na
 
4
Bi(SO
 
4
)
 
3
Cl
Cesanite
Na
 
3
Ca
 
2
(SO
 
4
)
 
3
(OH)
Fluorphosphohedyphane
Ca
 
2
Pb
 
3
(PO
 
4
)
 
3
F
Hedyphane
Pb
 
3
Ca
 
2
(AsO
 
4
)
 
3
Cl
Morelandite
Ca
 
2
Ba
 
3
(AsO
 
4
)
 
3
Cl
Phosphohedyphane
Ca
 
2
Pb
 
3
(PO
 
4
)
 
3
Cl
Related Minerals - Nickel-Strunz Grouping):

- +
7.BD.05Sulphohalite
Na
 
6
(SO
 
4
)
 
2
FCl
7.BD.05Sulfohalite
7.BD.10Galeite
Na
 
15
(SO
 
4
)
 
5
F
 
4
Cl
7.BD.10Schairerite
Na
 
3
(SO
 
4
)(F,Cl)
7.BD.15Kogarkoite
Na
 
3
(SO
 
4
)F
7.BD.20Cesanite
Na
 
3
Ca
 
2
(SO
 
4
)
 
3
(OH)
7.BD.20Aiolosite
Na
 
4
Bi(SO
 
4
)
 
3
Cl
7.BD.25Burkeite
Na
 
6
(CO
 
3
)(SO
 
4
)
 
2
7.BD.30Hanksite
Na
 
22
K(SO
 
4
)
 
9
(CO
 
3
)
 
2
Cl
7.BD.35Cannonite
Bi
 
2
(SO
 
4
)O(OH)
 
2
7.BD.40Lanarkite
Pb
 
2
(SO
 
4
)O
7.BD.45Grandreefite
Pb
 
2
(SO
 
4
)F
 
2
7.BD.50Itoite
Pb
 
3
Ge
4+
 
(SO
 
4
)
 
2
O
 
2
(OH)
 
2
7.BD.55Chiluite
Bi
 
3
Te
6+
 
Mo
6+
 
O
 
10.5
7.BD.60Hectorfloresite
Na
 
9
(SO
 
4
)
 
4
(IO
 
3
)
7.BD.65Pseudograndreefite
Pb
 
6
(SO
 
4
)F
 
10
7.BD.70Sundiusite
Pb
 
10
(SO
 
4
)O
 
8
Cl
 
2
Related Minerals - Hey's Index Grouping:

- +
26.1Kogarkoite
Na
 
3
(SO
 
4
)F
26.2Sulphohalite
Na
 
6
(SO
 
4
)
 
2
FCl
26.3Schairerite
Na
 
3
(SO
 
4
)(F,Cl)
26.4Galeite
Na
 
15
(SO
 
4
)
 
5
F
 
4
Cl
26.5Connellite
Cu
 
19
(SO
 
4
)(OH)
 
32
Cl
 
4
· 3H
 
2
O
26.6Chlorothionite
K
 
2
Cu(SO
 
4
)Cl
 
2
26.7Kamchatkite
KCu
 
3
(SO
 
4
)
 
2
OCl
26.8Spangolite
Cu
 
6
Al(SO
 
4
)(OH)
 
12
Cl · 3H
 
2
O
26.9Aubertite
CuAl(SO
 
4
)
 
2
Cl · 14H
 
2
O
26.10Magnesioaubertite
(Mg,Cu)Al(SO
 
4
)
 
2
Cl · 14H
 
2
O
26.11Svyazhinite
(Mg,Mn
2+
 
,Ca)(Al,Fe
3+
 
)(SO
 
4
)
 
2
F · 14H
 
2
O
26.12D'Ansite
Na
 
21
Mg(SO
 
4
)
 
10
Cl
 
3
26.13Anhydrokainite
KMg(SO
 
4
)Cl
26.14Kainite
KMg(SO
 
4
)Cl · 3H
 
2
O
26.15Mosesite
(Hg
 
2
N)(Cl,SO
 
4
,MoO
 
4
) · H
 
2
O
26.16Kleinite
(Hg
 
2
N)(Cl,SO
 
4
) · nH
 
2
O
26.17Wilcoxite
MgAl(SO
 
4
)
 
2
F · 17H
 
2
O
26.18Creedite
Ca
 
3
SO
 
4
Al
 
2
F
 
8
(OH)
 
2
· 2H
 
2
O
26.19Lannonite
Mg
 
2
Ca
 
4
Al
 
4
(SO
 
4
)
 
8
F
 
8
· 24H
 
2
O
26.20Chukhrovite-(Y)
Ca
 
3
(Y,Ce)[F|SO
 
4
|(AlF
 
6
)
 
2
] · 10H
 
2
O
26.21Chukhrovite-(Ce)
Ca
 
3
(Ce,Y)[F|SO
 
4
|(AlF
 
6
)
 
2
] · 10H
 
2
O
26.22Grandreefite
Pb
 
2
(SO
 
4
)F
 
2
26.23Pseudograndreefite
Pb
 
6
(SO
 
4
)F
 
10
26.24Sundiusite
Pb
 
10
(SO
 
4
)O
 
8
Cl
 
2
26.26Mammothite
Pb
 
6
Cu
 
4
AlSb
5+
 
O
 
2
(OH)
 
16
Cl
 
4
(SO
 
4
)
 
2
26.27Atlasovite
K(BiO)Cu
 
6
Fe
3+
 
(SO
 
4
)
 
5
O
 
3
Cl
26.28Xitieshanite
Fe
3+
 
(SO
 
4
)Cl · 6H
 
2
O
26.29Nabokoite
KCu
 
7
(SO
 
4
)
 
5
(Te
4+
 
O
 
3
)OCl

Other Names for Caracolite

Other Languages:
German:Caracolit
Russian:Караколит
Simplified Chinese:氯铅芒硝
Spanish:Caracolita

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 Caracolite

Reference List:

- +
Websky (1886) Sitzungsberichte der Akademie der Wissenschaften, Berlin: 1045.

Fletcher (1889) Mineralogical Magazine: 8: 172.

Goldschmidt, V. (1913) Atlas der Krystallformen. 9 volumes, atlas, and text: vol. 2: 2: 104.

Larsen, E.S. (1921) The Microscopic Determination of the Nonopaque Minerals, First edition, USGS Bulletin 679: 52.

Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II. John Wiley and Sons, Inc., New York, 7th edition, revised and enlarged, 1124 pp.: 546-547.

Neues Jahrbuch für Mineralogie, Monatshefte (1969): 58-64.

Internet Links for Caracolite

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  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Caracolite details from Handbook of Mineralogy (PDF)
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  • Localities for Caracolite

    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
     
    • Antofagasta Region
      • Antofagasta Province
        • Sierra Gorda District
          • Caracoles
    Periodico di Mineralogia 54 (1985), 34; Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 82, 547.
    Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 75.
    Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 75.
    Collection U. Kolitsch (gift from Arturo Molina)
    Vajdak, Josef (2006) Mineral News: 22: 11; U. Kolitsch collection.
    • Tarapacá Region
      • El Tamarugal Province
        • Challacollo
    Tim Jokela Jr
    Schluter, J., Pohl, D., & Britvin, S. (2005). The new mineral challacolloite, KPb2Cl5, the natural occurrence of a technically known laser material. Neues Jahrbuch für Mineralogie-Abhandlungen, 182(1), 95-101.
    China
     
    • Xinjiang Autonomous Region
      • Tulufan Prefecture (Turfan Prefecture; Turpan Prefecture)
        • Shanshan Co. (Piqan Co.; Pichan Co.)
          • Kanggur-Xifengshan gold belt
    Kaiyin Bai and Zhaoxin Han (2007): Northwestern Geology 40(2), 114-117
    Germany
     
    • North Rhine-Westphalia
      • Ruhr Coal Mining area
        • Marl
          • Marl-Hüls
    Weiss: "Mineralfundstellen, Deutschland West", 1990
    Ukraine
     
    • Zhytomyr Oblast' (Zhitomir Oblast')
    Lyckberg, P., Chornousenko, V. & Wilson, W. E. (2009): Volodarsk-Volynski, Zhitomir Oblast, Ukraine. Mineralogical Record, 40, 473-506.
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