Unnamed (Na-Pb Carbonate-Hydroxide II)
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About Unnamed (Na-Pb Carbonate-Hydroxide II)
Formula:
NaPb5(CO3)4(OH)3
The sample studied by Siidra et al. (2018) contained considerable Ca (Na0.51Ca0.49). It is uncertain if a Ca-dominant analogue exists.
Colour:
Colourless
Lustre:
Vitreous
Crystal System:
Hexagonal
Anthropogenic phase found in slag, originally reported by Kokkoros & Vassiliadis (1953), but then neglected in the subsequent literature.
Visually very similar to hydrocerussite and plumbonacrite.
SXRD studies gave the following primitive-hexagonal cells:
a ~ 5.24 Å, c ~ 29.46 Å (Kokkoros & Vassiliadis, 1953);
a = 5.24-5.25 Å, c = 29.38-29.50 Å (Kolitsch et al., 2014).
The crystal structure and the correct (ideal) formula were determined by Siidra et al. (2018).
According to Kokkoros & Vassiliadis (1953), this phase is much more common in the Pb-rich slags of Lavrion than hydrocerussite. This observation was confirmed by Kolitsch et al. (2014). The phase seems to be commonly associated with fluorite and calcite, i.e. relatively Ca-rich Pb-slags.
Visually very similar to hydrocerussite and plumbonacrite.
SXRD studies gave the following primitive-hexagonal cells:
a ~ 5.24 Å, c ~ 29.46 Å (Kokkoros & Vassiliadis, 1953);
a = 5.24-5.25 Å, c = 29.38-29.50 Å (Kolitsch et al., 2014).
The crystal structure and the correct (ideal) formula were determined by Siidra et al. (2018).
According to Kokkoros & Vassiliadis (1953), this phase is much more common in the Pb-rich slags of Lavrion than hydrocerussite. This observation was confirmed by Kolitsch et al. (2014). The phase seems to be commonly associated with fluorite and calcite, i.e. relatively Ca-rich Pb-slags.
Unique Identifiers
Mindat ID:
45844
Long-form identifier:
mindat:1:1:45844:3
Physical Properties of Unnamed (Na-Pb Carbonate-Hydroxide II)
Chemistry of Unnamed (Na-Pb Carbonate-Hydroxide II)
Mindat Formula:
NaPb5(CO3)4(OH)3
The sample studied by Siidra et al. (2018) contained considerable Ca (Na0.51Ca0.49). It is uncertain if a Ca-dominant analogue exists.
The sample studied by Siidra et al. (2018) contained considerable Ca (Na0.51Ca0.49). It is uncertain if a Ca-dominant analogue exists.
Element Weights:
Crystallography of Unnamed (Na-Pb Carbonate-Hydroxide II)
Crystal System:
Hexagonal
Class (H-M):
6/mmm(6/m2/m2/m) - Dihexagonal Dipyramidal
Space Group:
P63/mmc
Cell Parameters:
a = 5.2533(11) Å, c = 29.425(6) Å
Ratio:
a:c = 1 : 5.601
Unit Cell V:
703.3 ų
Morphology:
Thin, sharp, transparent, three- to six-sided platelets.
Comment:
Siidra et al. (2018).
Synonyms of Unnamed (Na-Pb Carbonate-Hydroxide II)
Common Associates
Associations Based on Photo Data:
Other Information
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 Unnamed (Na-Pb Carbonate-Hydroxide II)
mindat.org URL:
https://www.mindat.org/min-45844.html
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References for Unnamed (Na-Pb Carbonate-Hydroxide II)
Reference List:
Kokkoros, P., Vassiliadis, K. (1953) Röntgenkristallographie von Hydrocerussit. Tschermaks Mineralogische und Petrographische Mitteilungen, 3 (4). 298-304 doi:10.1007/bf01135346
Kolitsch, U.; Rieck, B.; Brandstätter, F.; Schreiber, F.; Fabritz, K. H.; Blaß, G.; Gröbner, J. (2014) Neufunde aus dem altem Bergbau und den Schlacken von Lavrion (II). Mineralien-Welt, 25 (2). 82-95
Siidra, Oleg, Nekrasova, Diana, Depmeier, Wulf, Chukanov, Nikita, Zaitsev, Anatoly, Turner, Rick (2018) Hydrocerussite-related minerals and materials: structural principles, chemical variations and infrared spectroscopy. Acta Crystallographica Section B Structural Science, Crystal Engineering and Materials, 74 (2). 182-195 doi:10.1107/s2052520618000768
Localities for Unnamed (Na-Pb Carbonate-Hydroxide II)
Showing 2 localities.
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The Locality List
- 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).
All localities listed without proper references should be considered as questionable.
Greece | |
| Fritz Schreiber collection (SXRD-analysed by Uwe Kolitsch) |
| Kokkoros et al. (1953) +1 other reference |
Passa Limani Cove slag locality, Lavreotiki Municipal Unit, Lavreotiki, East Attica, Attica, Greece