Laurionite (original) (raw)
A valid IMA mineral species - grandfathered
About LaurioniteHide
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Lustre:
Adamantine, Pearly
Crystal System:
Orthorhombic
Name:
Named in 1887 by Rudolf Ignatz Koechlin after the type locality at Laurion, Greece. (Note that the type material consists of a piece of oxidised galena ore, not a slag.)
Unique IdentifiersHide
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Long-form identifier:
mindat:1:1:2343:2
0da45688-3470-4506-b859-7fe594ee640e
IMA Classification of LaurioniteHide
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Approved, 'Grandfathered' (first described prior to 1959)
Type description reference:
Classification of LaurioniteHide
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3.DC.05
3 : HALIDES
D : Oxyhalides, hydroxyhalides and related double halides
C : With Pb (As,Sb,Bi), without Cu
10.2.2.1
10 : OXYHALIDES AND HYDROXYHALIDES
2 : A(O,OH)Xq
8.8.7
8 : Halides - Fluorides, Chlorides, Bromides and Iodides; also Fluoborates and Fluosilicates
8 : Halides of Pb
Mineral SymbolsHide
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As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference |
|---|---|---|
| Lri | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Pronunciation of LaurioniteHide
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Pronunciation:
| Play | Recorded by | Country |
|---|---|---|
| Sorry, your browser doesn't support HTML5 audio. | Jolyon Ralph | United Kingdom |
Physical Properties of LaurioniteHide
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Cleavage:
Distinct/Good
distinct on {101}.
Density:
6.241 g/cm3 (Measured) 6.212 g/cm3 (Calculated)
Optical Data of LaurioniteHide
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RI values:
_n_α = 2.077 _n_β = 2.116 _n_γ = 2.158
2V:
Measured: 70° , Calculated: 90°
δ = 0.081
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Chemistry of LaurioniteHide
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Crystallography of LaurioniteHide
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Crystal System:
Orthorhombic
Class (H-M):
m m m _(_2/_m_2/_m_2/m ) - Dipyramidal
Cell Parameters:
a = 7.1110 Å, b = 9.6987 Å, c = 4.0203 Å
Ratio:
a:b:c = 0.733 : 1 : 0.415
Unit Cell V:
277.27 ų (Calculated from Unit Cell)
Morphology:
Crystals elongated [010] thick to thin tabular {100}. Often sword-shaped morphology. {100} striated [021] at times. Significant form {812} is generally replaced, or accompanied, by vicinal faces. Also lenticular.
Comment:
Non-standard space-group setting Pcmn.
Crystallographic forms of LaurioniteHide
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Crystal Atlas:
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Crystal StructureHide
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| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0010776 | Laurionite | Venetopoulos C C, Rentzeperis P J (1975) The crystal structure of laurionite, Pb(OH)Cl Zeitschrift fur Kristallographie 141 246-259 |  |
1975 | 0 | 293 | |
| 0011877 | Laurionite | Wyckoff R W G (1963) Second edition. Interscience Publishers, New York, New York Crystal Structures 1 298-306 | 1963 | 0 | 293 | ||
| 0017980 | Laurionite | Brasseur H (1940) Etude roentgenographique de la laurionite Pb Cl (O H) _cod_database_code 1011083 Bulletin de la Societe Royal des Sciences de Liege 9 166-169 | 1940 | 0 | 293 | ||
| 0017924 | Laurionite | Goldsztaub S (1937) Structure cristalline de la laurionite _cod_database_code 1011017 Comptes Rendus Hebdomadaires des Seances de l'Academie des Sciences 204 702-703 | 1937 | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder DiffractionHide
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Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 4.01 Å | (100) |
| 3.30 Å | (55) |
| 2.30 Å | (50) |
| 3.56 Å | (40) |
| 3.33 Å | (30) |
| 5.7 Å | (25) |
| 2.87 Å | (25) |
Geological EnvironmentHide
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Geological Setting:
Saline water acting on lead slags. Oxidation zone in lead deposits.
Type Occurrence of LaurioniteHide
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General Appearance of Type Material:
Lath shaped crystals to 5 mm in length
Associated Minerals at Type Locality:
Reference:
Köchlin, R. (1887) Ueber Phosgenit und ein muthmasslich neues Mineral vom Laurion. Annalen des K.K. Naturhistorischen Hofmuseums: 2: 185-190.
Synonyms of LaurioniteHide
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Other Language Names for LaurioniteHide
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Relationship of Laurionite to other SpeciesHide
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Other Members of this group:
Common AssociatesHide
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Associated Minerals Based on Photo Data:
Related Minerals - Strunz-mindat GroupingHide
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Other InformationHide
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Notes:
Slightly soluble in cold water, more soluble in warm water. Soluble in nitric acid.
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
Internet Links for LaurioniteHide
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References for LaurioniteHide
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Reference List:
Localities for LaurioniteHide
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This 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.
Locality ListHide
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- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for references and further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. 
- Good crystals or important locality for species. 
- World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).
All localities listed without proper references should be considered as questionable.