flint has an extremely bright shine
Obsidian has a higher luster(shinier) than coal, coal is organic, and coal is sedimentary and obsidian is igneous
Coal is Black and shiny, and will sheer easily. It is a mixture of many different organic compounds. Found/mined in specific minefields in the UK. Flint is white/colourless and does not sheer easily(very hard). It is only one compound. sand (silicon dioxide) or possibly other crystalline solids held in the flint chemical lattice. It is found mainly in the clay vales of Southern England.
Obsidian and coal are both rocks and they are formed by lava
These are same
nothing
Obsidian has a higher luster(shinier) than coal, coal is organic, and coal is sedimentary and obsidian is igneous
Coal is Black and shiny, and will sheer easily. It is a mixture of many different organic compounds. Found/mined in specific minefields in the UK. Flint is white/colourless and does not sheer easily(very hard). It is only one compound. sand (silicon dioxide) or possibly other crystalline solids held in the flint chemical lattice. It is found mainly in the clay vales of Southern England.
Both are types of rocks.
Obsidian and coal are both rocks and they are formed by lava
These are same
nothing
Both are glassy and both are black
No. One seldom finds obsidian in a coal mine.
Synonyms for obsidian are brunet, charcoal, coal, ebony, pitch, raven, slate, sable, clouded, dusky, and somber. Antonyms for obsidian are white and clean.
peat is soft and the others aren't
difference between traditional sources of energy and coal
coal in the western areas has a lower energy content