In: Other
How can yoy differentiate Slate from shale?
SLATE | SHALE |
Slate is a low-grade metamorphic rock that generates from the metamorphism of shale. | Shale is a fine-grained sedimentary rock consist of silt and clay. |
Slate when it comes in contact with water it gives earthy smell. | Shale when it comes in contact with water it is orderless. |
Slate is not porous not permeable | Shale is highly porous but not permeable. |
Slate is lacks of fisibility but contains fracture of joint. | Shale show fisibility. |
This is a foliation bearing rock. | This is a non-foliated rock |
The foliation of Slate is called Slaty cleavage | Shale some time shows bedding cleavage as it deposited in very low energy condition. |
The Slate has used in roofing of roof. | No economic used but sometime placer Dimond host the shale stratigraphic rock |
Whenever you are getting confused with shale and slate in the field than just put some water over the sample and smell it carefully. If the sample gives an earthy smell (the smell of a road after rain) than it is Slate .