1 Definition
1.1 Definition
Coal is a combustible black or brownish-black sedimentary rock usually occurring in rock strata in layers called coal beds
Dolomite is a sedimentary rock containing more than 50 percent of the mineral dolomite by weight
1.2 History
1.2.1 Origin
USA
Southern Alps, France
1.2.2 Discoverer
John Peter Salley
Dolomieu
1.3 Etymology
From the Old English term col, which has meant mineral of fossilized carbon since the 13th century
From French, from the name of Dolomieu (1750–1801), the French geologist who discovered the rock
1.4 Class
Sedimentary Rocks
Sedimentary Rocks
1.4.1 Sub-Class
Durable Rock, Soft Rock
Durable Rock, Medium Hardness Rock
1.5 Family
1.5.1 Group
Not Applicable
Not Applicable
1.6 Other Categories
Coarse Grained Rock, Fine Grained Rock, Medium Grained Rock, Opaque Rock
Coarse Grained Rock, Fine Grained Rock, Medium Grained Rock, Opaque Rock