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(1.0" x 1.5" Rocks)
Coal Rock Set # 2 shows all the stages of how coal is made in the earth
and all the similarities and differences between diffferent kinds of coals.
This set comes
with an information sheet and these 9 samples / specimens:
Peat, Lignite, Sub-Bituminous Coal, Bituminous Coal,
Semi-Bituminous
Coal, Sub-Anthracite, Anthracite, Graphite and Boghead / Cannel Coal.
To buy
Coal Rock Set # 2 at $19.95 U.S. each, press the "Add to Cart"
button below. For more information, press the
"Email ONTA" underlined link.
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