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相關文獻
- High Potassium Mordenite in the Andesite from the Coastal Range, Eastern Taiwan
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頁籤選單縮合
題名 | High Potassium Mordenite in the Andesite from the Coastal Range, Eastern Taiwan=東臺灣海岸山脈安山岩所含高鉀絲光沸石 |
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作者姓名(中文) | 羅煥記; 宋聖榮; 溫紹炳; | 書刊名 | 中國地質學會會刊 |
卷期 | 34:4 1991.10[民80.10] |
頁次 | 頁293-304 |
分類號 | 353.17 |
關鍵詞 | 安山岩; 東臺灣; 海岸山脈; 高鉀絲光沸石; |
語文 | 英文(English) |
中文摘要 | 高鉀絲光沸石,以杏仁狀體,充填於臺灣東部海岸山脈北段安山岩中。該安山岩為淺灰色斑狀岩,含斜長石、紫蘇輝石及輝石等斑晶,石基,及次生礦物,如絲光沸石,綠泥石和綠土等。 絲光沸石為充填於安山岩孔隙之唯一礦物。杏仁狀體呈球形、卵形、和伸長形等,直徑從0.0五到三公釐。每一杏仁體外圈是絲光沸石晶體,內圈是非晶質物。該安山岩流中的絲光沸石,是由安山岩受蝕變作用而釋出於孔隙溶液中的物質,結晶而成。安山岩只受低程度蝕變作用,是海岸山脈絲光沸石含鉀高的最可能原因。 |
英文摘要 | High potassium mordenite occurs as amygdules in the andesite from the northern Coastal Range, eastern Taiwan. The andesite is a light gray porphyritic rock containing plagioclase (17.0%), hypersthene and augite (4.0%) as phenocrysts, groundmass (69.0%), and secondary minerals of mordenite (5.0%), chlorite and smectite (5.0%). The andesite has suffered from a low degree of alteration. Mordenite is an unique mineral filling in vesicles of the andesite. The amygdules occur in spherical, oval, and elongated shapes, ranging from 0.05 to 3 mm in diameter. Each amygdule consists of mordenite crystals in the periphery and an amorphous material in the interior. The mordenite in the andesitic lava is believed to have crystallized from the pore solution carried with material released from the andesite during alteration. Low degree of alteration of the andesite may be the most possible cause for the high potassium content in mordenite from the Coastal Range. |
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