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Sahlinite

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Big Photo

Långban, Filipstad, Värmland, Sweden
© Maurice de Graaf

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Formula:
Pb
 
14
(AsO
 
4
)
 
2
O
 
9
Cl
 
4
System:MonoclinicColour:Pale yellow
Hardness:2 - 3
Name:Named after Carl Sahlin, General Manager of the iron works in Sweden.
This page provides mineralogical data about Sahlinite.

Classification of Sahlinite

IMA status:Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
Strunz 8th edition ID:3/D.10-170
Nickel-Strunz 10th (pending) edition ID:8.BO.20

8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
O : With only large cations, (OH, etc.):RO4 about 1:1
Dana 8th edition ID:41.1.4.1

41 : ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
1 : (AB)m(XO4)pZq, where m:p > 4:1
Hey's CIM Ref.:22.2.12

22 : Phosphates, Arsenates or Vanadates with other Anions
2 : Phosphates, arsenates or vanadates with chloride
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Type Occurrence of Sahlinite

Type Locality:Långban, Filipstad, Värmland, Sweden
General Appearance of Type Material:Aggregates of small, thin scales.
Year of Discovery:1934
Geological Setting of type material:Dolomitic rock
Associated Minerals at type locality:
Hausmannite

Physical Properties of Sahlinite

Colour:Pale yellow
Hardness (Mohs):2 - 3
Cleavage:Perfect
On {010}, perfect.
Density (measured):7.95 g/cm3

Crystallography of Sahlinite

Crystal System:Monoclinic
Cell Parameters:a = 12.71Å, b = 22.49Å, c = 11.36Å
β = 118.99°
Ratio:a:b:c = 0.565 : 1 : 0.505
Unit Cell Volume:V 2,840.37 ų (Calculated from Unit Cell)
Morphology:Aggregates of small thin scales.

Optical Data of Sahlinite

Type:Biaxial (-)
RI values: nα = 3.300
Maximum Birefringence:δ = 3.300

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Moderate
Dispersion:marked to extreme

Chemical Properties of Sahlinite

Formula:
Pb
 
14
(AsO
 
4
)
 
2
O
 
9
Cl
 
4
Essential elements:As, Cl, O, Pb
All elements listed in formula:As, Cl, O, Pb

Relationship of Sahlinite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
8.BO.05Nacaphite
Na
 
2
Ca(PO
 
4
)F
8.BO.10Preisingerite
Bi
 
3
(AsO
 
4
)
 
2
O(OH)
8.BO.10Petitjeanite
Bi
 
3
(PO
 
4
)
 
2
O(OH)
8.BO.10Schumacherite
Bi
 
3
(VO
 
4
)
 
2
O(OH)
8.BO.15Atelestite
Bi
 
2
(AsO
 
4
)O(OH)
8.BO.15Hechtsbergite
Bi
 
2
(VO
 
4
)O(OH)
8.BO.15Smrkovecite
Bi
 
2
(PO
 
4
)O(OH)
8.BO.20Kombatite
Pb
 
14
(VO
 
4
)
 
2
O
 
9
Cl
 
4
8.BO.25Heneuite
CaMg
 
5
(CO
 
3
)(PO
 
4
)
 
3
(OH)
8.BO.30Nefedovite
Na
 
5
Ca
 
4
(PO
 
4
)
 
4
F
8.BO.35Kuznetsovite
(Hg
+
2
)Hg
2+
 
(AsO
 
4
)Cl
8.BO.40Artsmithite
(Hg
+
2
)
 
2
Al(PO
 
4
)
 
1.74
(OH)
 
1.78
8.BO.45Schlegelite
Bi
 
7
(AsO
 
4
)
 
3
(MoO
 
4
)
 
2
O
 
4
Related Minerals - Hey's Index Grouping:

- +
22.2.1Sampleite
NaCaCu
 
5
(PO
 
4
)
 
4
Cl · 5H
 
2
O
22.2.2Lavendulan
NaCaCu
 
5
(AsO
 
4
)
 
4
Cl · 5H
 
2
O
22.2.3Chlorapatite
Ca
 
5
(PO
 
4
)
 
3
Cl
22.2.4Turneaureite
Ca
 
5
(AsO
 
4
)
 
3
Cl
22.2.5Shubnikovite
Ca
 
2
Cu
 
8
(AsO
 
4
)
 
6
(OH)Cl · 7H
 
2
O
22.2.6Richelsdorfite
Ca
 
2
Cu
 
5
Sb(AsO
 
4
)
 
4
(OH)
 
6
Cl · 6H
 
2
O
22.2.7Alforsite
Ba
 
5
(PO
 
4
)
 
3
Cl
22.2.8Morelandite
Ca
 
2
Ba
 
3
(AsO
 
4
)
 
3
Cl
22.2.9Pyromorphite
Pb
 
5
(PO
 
4
)
 
3
Cl
22.2.10Mimetite
Pb
 
5
(AsO
 
4
)
 
3
Cl
22.2.11Mimetite-M
Pb
 
5
(AsO
 
4
)
 
3
Cl
22.2.13Georgiadèsite
Pb
 
4
(AsO
 
3
)Cl
 
4
(OH)
22.2.14Vanadinite
Pb
 
5
(VO
 
4
)
 
3
Cl
22.2.15Kombatite
Pb
 
14
(VO
 
4
)
 
2
O
 
9
Cl
 
4
22.2.16Leningradite
PbCu
 
3
(VO
 
4
)
 
2
Cl
22.2.17Hedyphane
Pb
 
3
Ca
 
2
(AsO
 
4
)
 
3
Cl
22.2.18Nealite
Pb
 
4
Fe
2+
 
(As
3+
 
O
 
3
)
 
2
Cl
 
4
 · 2H
 
2
O

Other Names for Sahlinite

Other Languages:
German:Sahlinit
Spanish:Sahlinita

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 Sahlinite

Reference List:

- +
Aminoff (1934) Geologiska Föeningens I Stockholm. Förhandlinger, Stockholm: 56: 493.

American Mineralogist (1935): 20: 315.

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.: 775.

Neues Jahrbuch für Mineralogie, Monatshefte (1985): 3: 127-131.

Internet Links for Sahlinite

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

    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.
    Hide Locality List
    (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.
    Namibia
     
    • Otjozondjupa Region
      • Grootfontein District
        • Kombat
    		Mineralogical Record: 22: 421.
    Sweden
     
    • Värmland
      • Filipstad
    		Aminoff (1934) Geologiska Föeningens I Stockholm. Förhandlinger, Stockholm: 56: 493-494; 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.
        • Nordmark (Nordmarksberg)
    		GFF 125, 87
        • Persberg district
          • Pajsberg
    		Nysten, P. (2004): Harstigen ett mineralogisk eldorado i Bergslagen. Norsk Bergverksmuseum Skrift 28: 5-13
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