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中国陆相湖盆沉积岩中方沸石的产状、成分和成因.pdf

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中国陆相湖盆沉积岩中方沸石的产状、成分和成因.pdf

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中国陆相湖盆沉积岩中方沸石的产状、成分和成因.pdf

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ֻ42 ज ֻ4 ௹ imentary rocks We summarize
, ,
the occurrence composition genesis of natural analcime and discuss its impact on reservoirs based on previous
. ,
researches The results show that analcime a kind of silicate mineral containing crystalline water and of framework
, - , 3-
structure is characterized by a silica oxygen tetrahedron on map view to form a closed ring and a cage structure in D
, .
visualization space the pore pathways in which are conducive to dissolution There are five typical types of natural

analcime in terrestrial lacustrine basins among which the analcime with intergranular cements and fracture fillings is
, , ,
euhedral and the exhalative analcime comes in two kinds of occurrence namely porhyritic texture and discontinuous
- . :
coarse grained laminae The compositional differences of analcime concentrate on the content of Na and K ions the K ion
, / 2.0 2.69,
content tends to be higher and the Si Al ratio in analcime mainly ranges from to when it comes to alkaline
- . ,
volcanic rock as the host rock Among the four categories of natural analcime in terms of genesis that in terrestrial
. ,
lacustrine basins is mainly derived from diagenesis and hydrothermal exhalation In all sedimentary facies is key in the

formation and disso