pyrargillite

A gray, green, or brown mineral similar to mica, formed by chemical alteration of other minerals, such as cordierite.块云母类似云母的灰色、绿色或棕色矿物，由其它矿经化学变化形成，如堇青石6sI汉语字典

So the dark mica in this granite should be called biotite.那么．在这块花岗岩中的黑色云母类矿物就应当叫做黑云母了。6sI汉语字典

They are mica which makes up the rest of the total rock.这块岩中余下的黑色矿物部分就是云母。6sI汉语字典

A small cloud or something resembling one.小云块，碎云小云彩或与之相象的某物6sI汉语字典

relating to or involving biotite.与黑云母有关或含有黑云母。6sI汉语字典

Mica in thin, transparent sheets.薄白云母片薄且透明的白云母片6sI汉语字典

yeast cake发面饼, 鲜酵母块6sI汉语字典

He looked instead at the brown rocks of the park, speckled with mica, and at the optimistic, leaping green of June.他没有看到公园里那些嵌有云母片的褐色石块，而是看到了一片欢天喜地、欣欣向荣的六月新绿。6sI汉语字典

patches of blue in a cloudy sky云海中露出的几块蓝天6sI汉语字典

To cause(clouds) to form fluffy masses.絮凝使（云）形成棉絮状块6sI汉语字典

The pollution cloud is three kilometers high.这块污染云有3公里高，6sI汉语字典

The angel is lying on a cloud.天使躺在一块云朵上。6sI汉语字典

The sky was overcast, the ligtning leaped from cloud to cloud.乌云盖顶，电光在云块间闪动。6sI汉语字典

epoxy enclosed mica capacitor环氧包封云母电容器6sI汉语字典

worked micafolium胶合云母箔,经过加工的6sI汉语字典

Test methods of mica papersGB/T7195-1987云母纸试验方法6sI汉语字典

worked micanite胶合云母板,经加工的6sI汉语字典

mica automatic-gauge classifier云母片厚度自动分类机6sI汉语字典