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Nadorite

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Djebel Nador, Constantine Province, Algeria
© O. Dziallas

Show Nadorite Photos (11)
Formula:
PbSb[O
 
2
|Cl]
System:OrthorhombicColour:Brown, yellow to ...
Lustre:Adamantine, ResinousHardness:3½ - 4
Name:After the type locality at Djebel Nador, Constantine, Algeria.


A secondary mineral in antimony-bearing hydrothermal deposits.

Classification of Nadorite

IMA status:Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
Strunz 8th edition ID:3/D.10-10
Nickel-Strunz 10th (pending) edition ID:3.DC.30

3 : HALIDES
D : Oxyhalides, hydroxyhalides and related double halides
C : With Pb (As,Sb,Bi), without Cu
Dana 8th edition ID:10.2.5.2

10 : OXYHALIDES AND HYDROXYHALIDES
2 : A(O,OH)Xq
Hey's CIM Ref.:24.3.4

24 : Antimonates and Antimonites
3 : Antimonates of Ti and Pb
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Type Occurrence of Nadorite

Co-type Localities:Djebel Nador, Constantine Province, Algeria
Djebel Debar, Hamman, Meskhootine, Constantine Province, Algeria
Year of Discovery:1870
Associated Minerals at type locality:
SmithsoniteBindheimite

Physical Properties of Nadorite

Lustre:Adamantine, Resinous
Diaphaneity (Transparency):Translucent
Colour:Brown, yellow to brownish yellow
Streak:White, yellow to yellowish white
Hardness (Mohs):3½ - 4
Cleavage:Perfect
On {010}, perfect.
Density (measured):7.02 g/cm3
Density (calculated):7.06 g/cm3

Crystallography of Nadorite

Crystal System:Orthorhombic
Class (H-M):mmm (2/m 2/m 2/m) - Dipyramidal
Space Group:Cmcm (C2/m 2/c 21/m)
Cell Parameters:a = 5.603Å, b = 12.245Å, c = 5.448Å
Ratio:a:b:c = 0.458 : 1 : 0.445
Unit Cell Volume:V 373.78 ų (Calculated from Unit Cell)
Z:4
Morphology:Crystals tabular {010}, or elongated [100], also lenticular [010] with a square or octagonal outline. May be subparallel or divergent platy groups.
Twinning:On {101}, nearly perpendicular (91°45'), common.

Optical Data of Nadorite

Type:Biaxial (+)
RI values: nα = 2.300 nβ = 2.340 - 2.350 nγ = 2.360 - 2.400
2V:Measured: 85° , Calculated: 88°
Maximum Birefringence:δ = 0.060 - 0.100

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

Chemical Properties of Nadorite

Formula:
PbSb[O
 
2
|Cl]
Essential elements:Cl, O, Pb, Sb
All elements listed in formula:Cl, O, Pb, Sb

Relationship of Nadorite to other Species

Common Associates:
ValentiniteSphaleriteSmithsoniteSénarmontiteMimetite
JamesoniteGalenaCerussiteBindheimiteAnglesite
Related Minerals - Nickel-Strunz Grouping):
3.DC.05Laurionite
PbClOH
3.DC.05Paralaurionite
PbClOH
3.DC.10Fiedlerite
Pb
 
3
Cl
 
4
F(OH)·H
 
2
O
3.DC.15Penfieldite
Pb
 
2
[OH|Cl
 
3
]
3.DC.20Laurelite
Pb(F,Cl,OH)
 
2
3.DC.25Bismoclite
BiOCl
3.DC.25Daubréeite
BiO(OH,Cl)
3.DC.25Matlockite
PbFCl
3.DC.25Rorisite
CaFCl
3.DC.25Zavaritskite
BiOF
3.DC.25Zhangpeishanite
BaFCl
3.DC.30Perite
PbBi[O
 
2
|Cl]
3.DC.35Aravaipaite
Pb
 
3
[F
 
3
|AlF
 
6
] · H
 
2
O
3.DC.35Calcioaravaipaite
PbCa
 
2
[(F,OH)
 
3
|AlF
 
6
] · H
 
2
O
3.DC.40Thorikosite
Pb
 
3
[OH|(SbO
 
3
,AsO
 
3
)|Cl
 
2
]
3.DC.45Mereheadite
Pb
 
2
[O|OH|Cl]
3.DC.50Blixite
Pb
 
2
[(O,OH)
 
2
|Cl]
3.DC.55Pinalite
Pb
 
3
WO
 
3
Cl
 
2
3.DC.60Symesite
Pb
 
10
[O
 
7
|SO
 
4
|Cl
 
4
] · H
 
2
O
3.DC.65Ecdemite
Pb
 
6
[As
 
2
O
 
7
|Cl
 
4
]
3.DC.65Heliophyllite
Pb
 
3
AsO
 
4-n
Cl
 
2n+1
3.DC.70Mendipite
Pb
 
3
[O
 
2
|Cl
 
2
]
3.DC.75Damaraite
Pb
 
3
[O
 
2
|OH|Cl]
3.DC.80Onoratoite
Sb
 
8
O
 
11
Cl
 
2
3.DC.85Cotunnite
PbCl
 
2
3.DC.90Pseudocotunnite
K
 
2
PbCl
 
4
3.DC.95Barstowite
Pb
 
4
[Cl
 
6
|CO
 
3
] · H
 
2
O
Related Minerals - Hey's Index Grouping:
24.3.1Lewisite
(Ca,Fe,Na)
 
2
(Sb,Ti)
 
2
(O,OH)
 
7
24.3.2Derbylite
(Fe,Fe,Ti)
 
7
SbO
 
13
(OH)
24.3.3Hemloite
(As,Sb)
 
2
(Ti,V,Fe,Al)
 
12
O
 
23
OH
24.3.5Bindheimite
Pb
 
2
Sb
 
2
O
 
6
(O,OH)
24.3.6Monimolite
(Pb,Ca,Fe)
 
3
Sb
 
2
O
 
7
24.3.7Thorikosite
Pb
 
3
[OH|(SbO
 
3
,AsO
 
3
)|Cl
 
2
]

Other Names for Nadorite

Synonyms:
Ochrolite
German names:
Nadorit
Russian names:
Надорит
Spanish names:
Nadorita
Swedish names:
Ochrolith

Other Information

Other Information:Alters to Cerussite.
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 Nadorite

Reference List:Flajolot, M (1870); Comptes rendu de l’Académie des sciences de Paris, 71, 237.

Cesàro (1888) Bulletin de la Société française de Minéralogie: 11: 44.

Flink (1889) Ak. Stockholm, Öfversigy: 46: 5 (as Ochrolith).

Dana, E.S. (1892) System of Mineralogy, 6th. Edition, New York: 863.

Goldschmidt, V. (1920) Atlas der Krystallformen. 9 volumes, atlas, and text: vol. 6: 66.

Larsen, E.S. (1921) The Microscopic Determination of the Nonopaque Minerals, First edition, USGS Bulletin 679: 113.

Barthoux (1925) Bulletin de la Société française de Minéralogie: 48: 246.

Russell (1927) Mineralogical Magazine: 21: 272.

Larsen, E.S. and Berman, H. (1934) The Microscopic Determination of the Nonopaque Minerals, Second edition, USGS Bulletin 848: 211.

Sillén and Melander (1941) Zeitschrift für Kristallographie, Mineralogie und Petrographie, Leipzig: 103: 420.

Bolfa, Pastant, and Roubault (1949) Comptes rendu de l’Académie des sciences de Paris: 228: 1739 (synthesis).

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.: 1039-1040.

Arkiv för Mineralogi och Geologi (1969): 4: 525.

Giuseppetti G., Tadini C. (1973) - Riesame della struttura cristallina della nadorite: PbSbO2Cl. Periodico di mineralogia – Roma: 42: 335-345 (in Italian with English abs.).

Internet Links for Nadorite

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    Localities for Nadorite

    Hide Locality List
    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.
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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.
    Algeria
     
    • Constantine Province
    		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: 1024, 1040.
      • Meskhootine
        • Hamman
    Australia
     
    • New South Wales
      • Yancowinna Co.
    		Birch BH Book
    Germany
     
    • Rhineland-Palatinate
      • Westerwald
        • Wied Iron Spar District
          • Neuwied
            • Puderbach
    		Weiss: "Mineralfundstellen, Deutschland West", Weise (Munich), 1990
    Namibia
     
    • Otjikoto (Oshikoto) Region
      • Tsumeb
    		Keller, P. & Innes, J. (1986): "Neue Minerale von Tsumeb." Lapis, 11 (9), 28-32.
    Sweden
     
    • Värmland
      • Filipstad
    		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: 1040; Nysten, P., Holtstam, D. and Jonsson, E. (1999) The Långban minerals. In Långban - The mines,their minerals, geology and explorers (D. Holtstam and J. Langhof, eds.), Swedish Museum of Natural History and Raster Förlag, Stockholm & Chr. Weise Verlag, Munich, pp. 89-183.
        • Pajsberg
    		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: 794, 1040.
    UK
     
    • England
      • Cornwall
        • Callington District
          • Pillaton
    		No reference listed
        • Wadebridge District
          • Area East of Wadebridge
            • St Endellion
    		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: 1040.
    No reference listed
            • St Teath
    		No reference listed
          • Area West of Wadebridge
            • St Minver
    		No reference listed
    USA
     
    • California
      • Riverside Co.
        • Crestmore
    		[micromounts@yahoogroups.com]
    Mineral and/or Locality
    Google
     
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