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calcite n.【礦物】方解石。

At first glance, calcite might be confused with quartz where both are clear, colorless, and “glassy“ . 乍一看來,方解石可能與石英相混淆,因為兩者都是透明、無色、且“呈玻璃狀”的。

At first glance, calcite might be confused with quartz where both are clear, colorless, and “glassy“ . 乍一看來,方解石可能與石英相混淆,因為兩者都是透明、無色、且“呈玻璃狀”的。

calcitonin

We have developed the grain size varies among 2um to 15um grade superfine powder and the yearly output of which comes up to 20 , 000 tons . our products mainly consist of calcite powder , french chalk , active coarse whiting and other jinshi brand series superfine powder , which are welcomed in the more than 10 provinces and districts markets . the company has owned a calcite mine , and the calcite storage capacity has reached to more than 2 million tons 99年公司投資1500萬元引進細川德國alpine公司先進超細粉碎分級設備流水生產線,屬國內領先水平,開發了粒徑為2um - 15um級的超細粉體(年生產量2萬噸) ,主要生產方解石粉、滑石粉、硅灰粉、活性重鈣等金石牌系列超細粉體,暢銷國內10多個省市,產品深受各地用戶親睞。

We find that the petrology characteristic of all the samples have no characteristic of meteoric water such as geopetal structure , infiltrative sand , ( uniform cement and gravitational cement on base of the research of the dolomite in the regions . on the dot diagram of combination of mgco3 ( mol % ) and sr , the dot are all close to the line of seawater whether they are microlite - crystalline penecontemporaneous dolostone or diagenetic dolostone of various crystals . the 87sr / 86sr value of dolostone or matrix is less than the one of sparry calcite in cave or vein , and close to the value of seawater 通過本區白云巖的研究發現:已有的白云巖樣品的巖石學特征沒有顯示出如示底構造、滲濾沙、新月型膠結物和重力膠結物等大氣淡水作用的特征;在白云石mgco _ 3mol百分數和白云石sr含量的投點圖中,無論是準同生成因的泥?微晶白云巖,還是粉?細晶(或中晶,或細晶以上的不等晶)的成巖白云巖,均投在海水線的附近;白云巖(或基質)的~ ( 87 ) sr / ~ ( 86 ) sr比值顯著低于與孔洞或脈中充填的亮晶方解石,且與海水值十分接近, ~ ( 13 ) c和~ ( 18 ) o值顯著高于孔洞或脈中充填的亮晶方解石,也偏向于海水值; mn含量則顯著低于孔洞或脈中充填的亮晶方解石。

This paper emphasizes the effect of the dissolution of aluminosilicate during diagenesis may provide more radiogenic strontium which would result in a high content of strontium in carbonate rocks . so we should avoid the vein of carbonate and select the samples with less terrigenous clastic , less grain content and lacking calcite cementation collected as analysis samples . the microcrystalline limestone and micro - to fine - crystalline dolomite are rather fairly whole rock samples 作者還強調了成巖過程中由長石等鋁硅酸鹽溶解提供殼源sr所造成的碳酸鹽礦物成巖蝕變可能表現為較高的sr含量;因此,在用全巖樣品進行旨在反映海水組成的各種分析時,應回避碳酸鹽脈,選擇含陸源碎屑低、顆粒數量少、缺乏方解石膠結物的樣品,微晶灰巖或微?粉晶白云巖是較為理想的全巖樣品。

We have carried out th / u dating on intercalated calcite samples . the results show that the capping flowstone layer is of an age of 94 ka , and the second one 220 ka . the fossil - bearing deposits which are bracketed by the two flowstone layers should be of an age between 94 and 220 ka 新生碳酸鹽巖與骨化石的鈾系測年結果表明:該地點覆蓋含人牙化石堆積的表層鈣板在約94ka以前開始形成,堆積疊壓的鈣板年代為約220ka ,人牙化石的年代應介于兩者之間。

We have carried out 230th / 234u dating on several intercalated calcite samples . the results show that the capping flowstone layer and the second one are holocene in time . the fourth flowstone layer is of an age of 55 ka , and the fifth one 110 ka 新生碳酸鹽鈾系法測年顯示,張口洞堆積所代表的時間跨度比原認為的長得多,這一結果支持我國中、晚更新世人類遺址原有年代框架被總體壓縮的觀點。

The calcite popular name has the big calcite and the small calcite two kinds , namely cleaves completely and incompletely two kinds , in big calcite has the transparency is very high , quality excellent is the iceland spar 方解石俗稱有大方解石及小方解石兩種,即解理完全及不完全兩種,其中大方解石中有的透明度很高,質量上乘的的即為冰洲石。

The influx of carbon dioxide from the atmosphere has caused the saturation horizons for aragonite and calcite to shift closer to the surface by 50 to 200 meters compared with where they were positioned in the 1800s 大氣的二氧化碳匯入海中,已經導致方解石和霰石的飽和線往上移動,比1800年代更接近海面50 ~ 200公尺。

The cementation of laumonite , calcite and chlorite , compact and pressure solution , as well as the dissolution of laumontite , feldspar are also of main factors which affect reservoir properties 方解石、綠泥石、濁沸石的膠結作用、壓實壓溶作用和濁沸石、長石的溶解作用也是影響儲集性能的主要因素。

Thus , corals and pteropods , which both produce aragonitic shells , and coralline algae , which manufacture magnesium calcite , may be especially susceptible to harm from ocean acidification 珊瑚和翼足類都會分泌霰石外殼,珊瑚藻則制造鎂方解石,因此,它們可能特別脆弱,容易受海洋酸化的傷害。

They are said to be “ undersaturated . ” shallow , warm surface waters are described as “ supersaturated ” with respect to both calcite and aragonite , meaning that these minerals have no tendency to dissolve 海洋淺層的溫暖海水,對方解石和霰石則為過飽和,代表這兩種礦物不傾向溶解。

The gemmological classification and fashioning properties and technological requirements are introduced systematically . the fashioning skills of faceted calcite stone are probed 摘要介紹了方解石的寶石學分類和加工性質及工藝要求,著重探討了刻面方解石寶石的加工技巧。

In conclusion , the freshwater cultured pearls produced by mussel hyriopsis cumingii contain no calcites , and this is obviously different from characteristics of saltwater cultured pearls 三角,帆蚌淡水養殖珍珠中不存在方解石,這與海水養殖珍珠中存在方解石明顯不同。

Changxing jinshi superfine powder chemical co . , ltd . was founded in june , 1991 , used to belong to state - operated changxing calcite miropowder plant ,前身屬于國營長興方解石微粉廠,創建于91年6日,當時國家沒有投資一分錢,僅靠白手起家。

Ma shengli and ma jin , frictional behavior of faults with quartz and calcite gouge at elevated temperature and pressure , acta seismologica sinica , 2 , 1 馬勝利,馬瑾, 1988 ,高溫高壓下石英和方解石斷層帶的摩擦滑動性狀,地震學報, 10 , 1 。

Atomic - absorption spectrophotometry of impurties in clay , feldspar , magnesite , calcite , dolomite , talc , quartz for electron ceramic raw materials 電子陶瓷原材料粘土長石菱鎂礦方解石白云石滑石石英中雜質的原子吸收分光光度測定法

While u - series dating of compact and well crystallized cave calcites , with its fairly high reliability , is widely used for hominid fossil sites 與此相比,純凈致密、結晶良好的洞穴新生碳酸鹽巖的鈾系年代已為學術界普遍認可。

U - series dating of compact and well crystallized cave calcites , with its fairly high reliability , is commonly used for hominid fossil sites 純凈致密、結晶良好的洞穴新生碳酸鹽巖鈾系年代的可信度已為學術界廣泛接受。