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hornblende 【礦物】角閃石。

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The qiongzhong and danxian batholiths , as the largest early mesozoic syntectonic granite intrusions in hainan island , are mainly composed of porphyritic biotite two - feldspars granitoids , in which alkali - feldspar phenocrysts and dark minerals are foliated mostly in we - direction . the granites are of metaluminous i - type . major and trace elements show co - variations with sio2 , suggesting the fractional crystallization of plagioclase , hornblende , apatite and ti - fe oxides in the evolution of the granites 花崗巖的主量元素和部分微量元素成分與sio _ 2呈良好的相關關系,顯示出明顯的斜長石、角閃石、磷灰石和ti - fe氧化物等的分離結晶作用,總體上它們與大陸島弧花崗巖的微量元素豐度和分布特征相似,系統地虧損ba 、 nb 、 sr 、 p和ti等元素。

The mafic dikes also formed by the partial melting of enriched mantle , include gabbro , diabase ( distributing mainly in luxi ) and lamprophyres ( camptovogesite , odinite and hornblende lamprophyres ) ( mainly in ludong ) . for all the rocks , crustal contamination was absent when magma emplaced . 2 基性脈巖主要包括輝長巖、輝綠巖(主要分布在魯西地區)和煌斑巖(以斜閃煌斑巖為主,同時含部分拉輝煌斑巖和角閃煌斑巖) (主要分布在魯東地區) ,都為富集巖石圈地幔部分熔融的產物。

The distinctive shimmer of the rocks and their marble - size crystals of red garnet , black hornblende and sage - green diopside in most places attest to metamorphic tortures nearly as intense as those experienced at akilia 伊蘇瓦巖石的許多特徵,如特殊的光澤與彈珠大小的各式結晶,包括紅色的石榴石、黑色的角閃石、鼠尾草般綠色的透輝石等,在在說明它經歷的變質作用幾乎與阿基利亞巖石一樣強烈。

The determinative characteristics of common rock forming minerals containing quartz group , feldspar group , mica group , hornblende group , pyroxene group , olivine group and carbonatite minerals will be discussed in greater detail 對常見造巖礦物,如石英類、長石類、云母類、角閃石類、輝石類、橄欖石類、碳酸鹽類礦物的鑒定特征將予以詳細的說明。

Mineral constituents consist mainly of jadeite , aegirine - augite , magnesio - riebeckite , winchite , magnesio - hornblende , actinolite , quartz , albite , rutile and sphene 主要組成礦物為硬玉、霓輝石、鎂納閃石、藍透閃石、鎂角閃石、陽起石、石英、鈉長石、金紅石和榍石。

Hornblende bearing varieties bridge the gap over to amphibolites which are in bands and dikes . 含角閃石的變種填補了帶狀和脈狀角閃巖的中間相。