Definition
Origin
Discoverer
Etymology
Class
Sub-Class
Group
Other Categories
Slate is a fine-grained, foliated, homogeneous metamorphic rock derived from an original shale-type sedimentary rock composed of clay or volcanic ash through low-grade regional metamorphism
From Old French esclate, from esclat (French éclat)
Durable Rock, Medium Hardness Rock
Fine Grained Rock, Opaque Rock
Oolite is a sedimentary rock formed from ooids, spherical grains which are composed of concentric layers of calcite
From oo- + -lite, after German Oolit. A rock consisting of fine grains of carbonate of lime
Durable Rock, Medium Hardness Rock
Fine Grained Rock, Opaque Rock