Vietnam or Thailand ? Vote for the TOP Country of the Week !
Updated: May 16, 2025
The mica-schist here consists of thick layers of quartz, with intervening folia of finely-scaly mica, often passing into a substance like black glossy clay-slate: in one spot, the layers of the quartz having disappeared, the whole mass became converted into glossy clay-slate. Where the folia were best defined, they were inclined at a high angle westward, that is, towards the range.
Word Of The Day
Others Looking