Crystallographicaly-Mineralogical Characteristics of Gypsum from Jajinci (Near Belgrade)
Само за регистроване кориснике
2003
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
At the two gypsum samples from Jajinci (gypsum-1 and gypsum-2) there were indiced X-ray powder diffraction patterns and qualitative-semiquantitative X-ray powder diffraction analysis were done. It was established that the investigated samples contain gypsum which dominate, and also clay minerals and quartz (up to few %). There were calculated following unit cell dimensions:
gypsum-1: ao = 6,287(3)Å; bo = 15,213(3)Å; co = 5,688(2)Å; o = 114,08(3)o; and Vo = 496,7(2)Å3; gypsum-2: ao = 6,274(2)Å; bo = 15,194(4)Å; co = 5,672(2)Å; o = 114,08(3)o; and Vo = 493,7(2)Å3; Gypsum-1 has bigger unit cell dimensions than the literature datas, while gypsum-2 has smaller. Loss of water at 110oC at gypsum-1 is 77%, and at gypsum-2 is 74%. These values indicated to the gypsum minerals. From results of the chemical analysis it can be seen that gypsum-1 has values for CaO + (MgO + SrO) much bigger (CaO+MgO+SrO = +2,91%), for SO3 much lesser (SO3 = -2,76%) regard to the theoretical values. At gy...psum-2 it is reversed, therewith that the difference regard to the theoretical values is much smaller (CaO+MgO+SrO = -0,20% and SO3 = +0,26%). It was established that the unit cell dimensions are in correlation with the results of chemical analysis and following calculated crystallochemical formulas:
gypsum-1: (Ca1,071Mg0,040Sr0,003)1,114S0,958O4 x 2H2,014O; and gypsum-2:
(Ca0,963Mg0,028Sr0,004)0,995S1,006O4 x 2H1,988O. Gypsum-1 which has bigger unit cell dimensions has excess of the twovalent cations (Ca, Mg and Sr) and sulfur deficit, while the gypsum-2 has vice versa. Also, gypsum-2 has almost ideal crystallochemical formula, because ionic exchanges are much less than in the gypsum-1.
Кључне речи:
Jajinci / gypsum / unit cell dimensions / crystallochemical formulasИзвор:
Radovi Geoinstituta, 2003, 38, 109-118Издавач:
- Geoinstitut
Институција/група
IHTMTY - JOUR AU - Tančić, Pavle AU - Ilić, Borivoje PY - 2003 UR - https://cer.ihtm.bg.ac.rs/handle/123456789/6430 AB - At the two gypsum samples from Jajinci (gypsum-1 and gypsum-2) there were indiced X-ray powder diffraction patterns and qualitative-semiquantitative X-ray powder diffraction analysis were done. It was established that the investigated samples contain gypsum which dominate, and also clay minerals and quartz (up to few %). There were calculated following unit cell dimensions: gypsum-1: ao = 6,287(3)Å; bo = 15,213(3)Å; co = 5,688(2)Å; o = 114,08(3)o; and Vo = 496,7(2)Å3; gypsum-2: ao = 6,274(2)Å; bo = 15,194(4)Å; co = 5,672(2)Å; o = 114,08(3)o; and Vo = 493,7(2)Å3; Gypsum-1 has bigger unit cell dimensions than the literature datas, while gypsum-2 has smaller. Loss of water at 110oC at gypsum-1 is 77%, and at gypsum-2 is 74%. These values indicated to the gypsum minerals. From results of the chemical analysis it can be seen that gypsum-1 has values for CaO + (MgO + SrO) much bigger (CaO+MgO+SrO = +2,91%), for SO3 much lesser (SO3 = -2,76%) regard to the theoretical values. At gypsum-2 it is reversed, therewith that the difference regard to the theoretical values is much smaller (CaO+MgO+SrO = -0,20% and SO3 = +0,26%). It was established that the unit cell dimensions are in correlation with the results of chemical analysis and following calculated crystallochemical formulas: gypsum-1: (Ca1,071Mg0,040Sr0,003)1,114S0,958O4 x 2H2,014O; and gypsum-2: (Ca0,963Mg0,028Sr0,004)0,995S1,006O4 x 2H1,988O. Gypsum-1 which has bigger unit cell dimensions has excess of the twovalent cations (Ca, Mg and Sr) and sulfur deficit, while the gypsum-2 has vice versa. Also, gypsum-2 has almost ideal crystallochemical formula, because ionic exchanges are much less than in the gypsum-1. PB - Geoinstitut T2 - Radovi Geoinstituta T1 - Crystallographicaly-Mineralogical Characteristics of Gypsum from Jajinci (Near Belgrade) VL - 38 SP - 109 EP - 118 UR - https://hdl.handle.net/21.15107/rcub_cer_6430 ER -
@article{ author = "Tančić, Pavle and Ilić, Borivoje", year = "2003", abstract = "At the two gypsum samples from Jajinci (gypsum-1 and gypsum-2) there were indiced X-ray powder diffraction patterns and qualitative-semiquantitative X-ray powder diffraction analysis were done. It was established that the investigated samples contain gypsum which dominate, and also clay minerals and quartz (up to few %). There were calculated following unit cell dimensions: gypsum-1: ao = 6,287(3)Å; bo = 15,213(3)Å; co = 5,688(2)Å; o = 114,08(3)o; and Vo = 496,7(2)Å3; gypsum-2: ao = 6,274(2)Å; bo = 15,194(4)Å; co = 5,672(2)Å; o = 114,08(3)o; and Vo = 493,7(2)Å3; Gypsum-1 has bigger unit cell dimensions than the literature datas, while gypsum-2 has smaller. Loss of water at 110oC at gypsum-1 is 77%, and at gypsum-2 is 74%. These values indicated to the gypsum minerals. From results of the chemical analysis it can be seen that gypsum-1 has values for CaO + (MgO + SrO) much bigger (CaO+MgO+SrO = +2,91%), for SO3 much lesser (SO3 = -2,76%) regard to the theoretical values. At gypsum-2 it is reversed, therewith that the difference regard to the theoretical values is much smaller (CaO+MgO+SrO = -0,20% and SO3 = +0,26%). It was established that the unit cell dimensions are in correlation with the results of chemical analysis and following calculated crystallochemical formulas: gypsum-1: (Ca1,071Mg0,040Sr0,003)1,114S0,958O4 x 2H2,014O; and gypsum-2: (Ca0,963Mg0,028Sr0,004)0,995S1,006O4 x 2H1,988O. Gypsum-1 which has bigger unit cell dimensions has excess of the twovalent cations (Ca, Mg and Sr) and sulfur deficit, while the gypsum-2 has vice versa. Also, gypsum-2 has almost ideal crystallochemical formula, because ionic exchanges are much less than in the gypsum-1.", publisher = "Geoinstitut", journal = "Radovi Geoinstituta", title = "Crystallographicaly-Mineralogical Characteristics of Gypsum from Jajinci (Near Belgrade)", volume = "38", pages = "109-118", url = "https://hdl.handle.net/21.15107/rcub_cer_6430" }
Tančić, P.,& Ilić, B.. (2003). Crystallographicaly-Mineralogical Characteristics of Gypsum from Jajinci (Near Belgrade). in Radovi Geoinstituta Geoinstitut., 38, 109-118. https://hdl.handle.net/21.15107/rcub_cer_6430
Tančić P, Ilić B. Crystallographicaly-Mineralogical Characteristics of Gypsum from Jajinci (Near Belgrade). in Radovi Geoinstituta. 2003;38:109-118. https://hdl.handle.net/21.15107/rcub_cer_6430 .
Tančić, Pavle, Ilić, Borivoje, "Crystallographicaly-Mineralogical Characteristics of Gypsum from Jajinci (Near Belgrade)" in Radovi Geoinstituta, 38 (2003):109-118, https://hdl.handle.net/21.15107/rcub_cer_6430 .