Mine road network
National Service Hotline
029-85212477
current location: home » Tech » Earth exploration rights » text

粉砂岩和粘土岩

Release date:2018-06-10  source:中国地质调查局  Browse times:396
        砂岩(siltstone)

具有粉砂状结构之岩石。碎屑成分常为石英及少量长石与白云母,颜色为灰黄、灰绿、灰黑、红褐等色。其进一步定名的原则与砂岩相同。黄土是一种半固结的粉砂岩。

粉砂岩

黏土岩(claystone)

由黏土矿物组成并常具有泥状结构之岩石。硬度低,用指甲能刻划。主要黏土矿物有高岭石、蒙脱石、伊利石等,其中高岭石是最常见矿物。除了黏土矿物外,黏土岩中可以混有不等量的粉砂、细砂以及CaCO3、SiO2、Fe2O3·nH2O等化学沉淀物,有时含有机质。黏土岩具有灰白、灰黄、灰绿、紫红、灰黑、黑等颜色,视其混入杂质之成分而定。

黏土岩中固结微弱者,称为黏土(clay);固结较好但没有层理者,称为泥岩(mudstone);固结较好且具有良好层理者,称为页岩(shale)。黏土岩的进一步定名应考虑其混入物成分和颜色,如黄绿色钙质页岩、黑色硅质页岩、紫红色钙质泥岩等。

黏土岩因其特有的性质,如可塑性、吸水性(如蒙脱石吸水后体积可增大5~20倍)、吸附性烧结性(如瓷器的控温烧结)、耐火性,受到当代社会的极大重视,已发展成一门专门学科。其研究与开发成果(如高温耐火材料),被广泛用于高新技术、石油化工和国防工业领域。

黏土岩

用3

 
 
[ Techsearch ]  [ Join in collection ]  [ Tell your friends ]  [ Print this article ]  [ Illegal reporting ]  [ close window ]

 

 
Recommend Tech
Click rank
cancel

Thank you for your support, I will continue to work hard.!

Sweep code support
Say as much as you like.

openAlipayIf you sweep, you can get a reward for sweeping yards.

Website Homepage

About Us

Contact

Use Agreement

Copyright privacy

Sitemap

Service Items

Member Service

Advertising Services

Website Message

Four Privileges

Payment Method

Apple APP Download
Android App Download
Mining Club
Contact Us

029-85212477

We are always waiting for your visit!

| ICP business license: Shaanxi ICP No. 15507745