Research output: Contribution to journal › Article › peer-review
The hydrocerussite-related phase, NaPb5(CO3)4(OH)3, from the ancient slags of Lavrion, Greece. / Siidra, Oleg I. ; Nekrasova, Diana O. ; Chukanov, Nikita V. ; Pekov, Igor V. ; Yapaskurt, Vasiliy O. ; Katerinopoulos, A.; Voudouris, P.; Magganas, A.; Zaitsev, Anatoly N. .
In: Mineralogical Magazine, Vol. 82, No. 4, 08.2018, p. 809–819.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - The hydrocerussite-related phase, NaPb5(CO3)4(OH)3, from the ancient slags of Lavrion, Greece
AU - Siidra, Oleg I.
AU - Nekrasova, Diana O.
AU - Chukanov, Nikita V.
AU - Pekov, Igor V.
AU - Yapaskurt, Vasiliy O.
AU - Katerinopoulos, A.
AU - Voudouris, P.
AU - Magganas, A.
AU - Zaitsev, Anatoly N.
PY - 2018/8
Y1 - 2018/8
N2 - The hydrocerussite-related phase, NaPb5(CO3)(4)(OH)(3), has been found as colourless lamellar crystals in cavities within a pebble of the ancient marine slag collected in the Pacha Limani area of the Lavrion mining district, Attilci, Greece. This phase of anthropogenic origin was characterized by electron microprobe, infrared spectroscopy, powder and single-crystal X-ray diffraction. The unique crystal structure (P6(3)/mmc, a = 5.2533(11), c 29.425(6) A, V= 703.3(3) A(3) and R-1 = 0.047) is based upon structurally and chemically different electroneutral blocks. Each of the blocks can be split into separate sheets. The outer sheets in each block are topologically identical and have the composition [PbCO3](0) . The [Pb(OH)(2)](0) lead hydroxide sheet is sandwiched between the two [PbCO3](0) sheets resulting in the formation of the first block [Pb-3(OH)(2)(CO3)(2)](0) structurally and compositionally identical to that one in hydrocerussite Pb-3(OH)(2) (CO3)(2). Similarly the [Na (OH)](0) sheet is sandwiched between another two [PbCO3](0) sheets thus forming the [NaPb2(OH)(CO3)(2)]0 block described previously in the structure of abellaite NaPb2(OH)(CO3)(2). Stereochemically active lone election pairs on Pb2+ cations are located between the blocks. There are two blocks of each type per unit cell, which corresponds to the following formula: [Pb-3(OH)(2)(CO3)(2)][NaPb2(OH)(CO3)(2)] or NaPb5(CO3)(4)(OH)(3) in the simplified representation. The formation of NaPb5(CO3)(4)(OH)(3) in Lavrion slags is by the contact of lead-rich slags with the sea water over the last two thousand years.
AB - The hydrocerussite-related phase, NaPb5(CO3)(4)(OH)(3), has been found as colourless lamellar crystals in cavities within a pebble of the ancient marine slag collected in the Pacha Limani area of the Lavrion mining district, Attilci, Greece. This phase of anthropogenic origin was characterized by electron microprobe, infrared spectroscopy, powder and single-crystal X-ray diffraction. The unique crystal structure (P6(3)/mmc, a = 5.2533(11), c 29.425(6) A, V= 703.3(3) A(3) and R-1 = 0.047) is based upon structurally and chemically different electroneutral blocks. Each of the blocks can be split into separate sheets. The outer sheets in each block are topologically identical and have the composition [PbCO3](0) . The [Pb(OH)(2)](0) lead hydroxide sheet is sandwiched between the two [PbCO3](0) sheets resulting in the formation of the first block [Pb-3(OH)(2)(CO3)(2)](0) structurally and compositionally identical to that one in hydrocerussite Pb-3(OH)(2) (CO3)(2). Similarly the [Na (OH)](0) sheet is sandwiched between another two [PbCO3](0) sheets thus forming the [NaPb2(OH)(CO3)(2)]0 block described previously in the structure of abellaite NaPb2(OH)(CO3)(2). Stereochemically active lone election pairs on Pb2+ cations are located between the blocks. There are two blocks of each type per unit cell, which corresponds to the following formula: [Pb-3(OH)(2)(CO3)(2)][NaPb2(OH)(CO3)(2)] or NaPb5(CO3)(4)(OH)(3) in the simplified representation. The formation of NaPb5(CO3)(4)(OH)(3) in Lavrion slags is by the contact of lead-rich slags with the sea water over the last two thousand years.
KW - hydrocenissite
KW - lead
KW - carbonate. crystal structure. layered structure
KW - lone electron pair
KW - abellaite
KW - Lavrion ancient slags
KW - anthropogenic mineralization
KW - CRYSTAL-STRUCTURE
KW - PB4SO4(CO3)(2)(OH)(2)
KW - MACPHERSONITE
KW - MINERALS
UR - https://www.cambridge.org/core/product/identifier/S0026461X18000221/type/journal_article
UR - http://www.mendeley.com/research/hydrocerussiterelated-phase-napb5co34oh3-ancient-slags-lavrion-greece
U2 - 10.1180/minmag.2017.081.058
DO - 10.1180/minmag.2017.081.058
M3 - Article
VL - 82
SP - 809
EP - 819
JO - Mineralogical Magazine
JF - Mineralogical Magazine
SN - 0026-461X
IS - 4
ER -
ID: 36122021