TY - JOUR
T1 - Natural analogs of belite sulfoaluminate cement clinkers from Negev Desert, Israel
AU - Sokol, Ella V.
AU - Kokh, Svetlana N.
AU - Vapnik, Yevgeny
AU - Thiéry, Vincent
AU - Korzhova, Sophia A.
N1 - Funding Information:
We dedicate this paper to the hallowed memory of Shulamit Gross (1923–2012) whose inspiring talent and diligence have brought to light the mineral treasures of Hatrurim. We wish to acknowledge Associate Editor Maarten Broekmans who made a significant intellectual contribution to the present work. The authors are grateful to Stefan Stöber [Halle (Saale), Germany] and the anonymous reviewer for critically reviewing and correcting the manuscript. We further thank V. Sharygin and T. Perepelova (IGM, Novosibirsk) for cooperation and helpful advice. Thanks are extended to N. Karmanov, Yu. Kolmogorov, E. Nigmatulina, and M. Khlestov for their assistance in the analytical work (IGM SB RAS, Novosibirsk). Trace element abundances were analyzed by Yu. Kolmogorov at the shared-research Siberian Synchrotron and Terahertz Radiation Centre, Budker Institute of Nuclear Physics (Novosibirsk, Russia). The study was supported by grant no. 12-05-00057 from the Russian Foundation for Basic Research. Research at the Har-Parsa stone workshop by Ye. Vapnik was supported by Irene Levi-Sala CARE Archaeological Foundation.
PY - 2014/7/1
Y1 - 2014/7/1
N2 - Ye'elimite-larnite rocks in the Hatrurim formation of the Negev Desert, Israel, are natural analogs of belite sulfoaluminate (BSA) cement clinkers. They have been produced by ultrahigh-temperature combustion metamorphism at ambient pressure of a calcareous sedimentary precursor. Their mineralogy consists of 35-50 vol% β-Ca2SiO4, 15-20 vol% ye'elimite, 7-15 vol% ferrites, and 15-20 vol% fluorapatite and/or fluorellestadite. A few grains of hatrurite (Ca3SiO5) and α'-Ca2SiO4 have been observed as well. The composition of α'- and β-Ca2SiO4 polymorphs by EPMA are near Ca1.96-1.98Na0.01-0.02 Si0.96P0.03Al0.01O4, whereas ye'elimite has an approximate composition by EPMA of Ca3.99Mg0.02Ba0.01 Na0.02K0.02Al5.73Fe3 +0.16Si0.10S0.97P0.02O16. The Al content of brownmillerite Ca2(Fe1-xAlx)2O5 ranges from x = 0.20-0.27. Fe-analog of shulamitite (Ca3Fe2TiO8) contains up to 15.1 wt% TiO2. Ye'elimite-larnite rocks were derived from chalky sediments by burning of combustible gas with a Tmax at 1200-1350 °C. The mineral content, microstructure, and texture/fabric of the ye'elimite-larnite rocks imply that chalky and/or marly sediments with randomly distributed clay, phosphorite, and gypsum may be utilized as cheap naturally homogenized and pulverized mixtures for industrial production of BSA cement clinker, as an environment-friendly alternative to ordinary Portland cement (OPC).
AB - Ye'elimite-larnite rocks in the Hatrurim formation of the Negev Desert, Israel, are natural analogs of belite sulfoaluminate (BSA) cement clinkers. They have been produced by ultrahigh-temperature combustion metamorphism at ambient pressure of a calcareous sedimentary precursor. Their mineralogy consists of 35-50 vol% β-Ca2SiO4, 15-20 vol% ye'elimite, 7-15 vol% ferrites, and 15-20 vol% fluorapatite and/or fluorellestadite. A few grains of hatrurite (Ca3SiO5) and α'-Ca2SiO4 have been observed as well. The composition of α'- and β-Ca2SiO4 polymorphs by EPMA are near Ca1.96-1.98Na0.01-0.02 Si0.96P0.03Al0.01O4, whereas ye'elimite has an approximate composition by EPMA of Ca3.99Mg0.02Ba0.01 Na0.02K0.02Al5.73Fe3 +0.16Si0.10S0.97P0.02O16. The Al content of brownmillerite Ca2(Fe1-xAlx)2O5 ranges from x = 0.20-0.27. Fe-analog of shulamitite (Ca3Fe2TiO8) contains up to 15.1 wt% TiO2. Ye'elimite-larnite rocks were derived from chalky sediments by burning of combustible gas with a Tmax at 1200-1350 °C. The mineral content, microstructure, and texture/fabric of the ye'elimite-larnite rocks imply that chalky and/or marly sediments with randomly distributed clay, phosphorite, and gypsum may be utilized as cheap naturally homogenized and pulverized mixtures for industrial production of BSA cement clinker, as an environment-friendly alternative to ordinary Portland cement (OPC).
KW - CaSiO polymorphs
KW - Combustion metamorphism
KW - Marly raw materials
KW - Sulfoaluminate clinkers
KW - Ye'elimite-larnite rocks
UR - http://www.scopus.com/inward/record.url?scp=84907964882&partnerID=8YFLogxK
U2 - 10.2138/am.2014.4704
DO - 10.2138/am.2014.4704
M3 - Article
AN - SCOPUS:84907964882
SN - 0003-004X
VL - 99
SP - 1471
EP - 1487
JO - American Mineralogist
JF - American Mineralogist
IS - 7
ER -