Unnamed (Na-Pb Carbonate-Hydroxide II)
A material that is NOT an approved mineral species
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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
GUID
(UUID V4):
(UUID V4):
5a1ef2c9-8dea-421d-ae39-250a593c979f
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.
Crystallography of Unnamed (Na-Pb Carbonate-Hydroxide II)
Crystal System:
Hexagonal
Class (H-M):
6/mmm (6/m 2/m 2/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
Associated Minerals 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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Mineral Dealers:
References for Unnamed (Na-Pb Carbonate-Hydroxide II)
Reference List:
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)
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).
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.
All localities listed without proper references should be considered as questionable.
Greece | |
| Kokkoros et al. (1953) +1 other reference |
Fritz Schreiber collection (SXRD-analysed by Uwe Kolitsch) |
Passa Limani Cove slag locality, Lavrion slag localities, Lavreotiki, East Attica, Attica, Greece