Limestone is made up of organic material, mostly calcium carbonate. The chalk variety is made up of the shells of coccolithophores, small platy animals that stack together and powder easily. Large layers of chalk indicate a low-oxygen environment, most likely the bed of an ancient seafloor. This sample is also available in packs of 12.
EISCO Chalk Limestone Specimen (Sedimentary Rock), Approx. 1" (3cm)
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$81.88
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$40.94
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EISCO Chalk Limestone Specimen (Sedimentary Rock), Approx. 1" (3cm)
- SKU:
- ZY119560
- Condition:
- New
- Availability:
- Free Shipping from the USA. Estimated 2-4 days delivery.
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EISCO Siltstone Specimen Sedimentary Rock Approx 1 3cm
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$69.88
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$34.94
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Eisco Sandstone Specimen (Sedimentary Rock), Approx. 1" (3cm)
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$74.18
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$37.09
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Eisco Red Sandstone Specimen (Sedimentary Rock), Approx. 1" (3cm)
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$74.18
Now:
$37.09
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EISCO Bituminous Coal Specimen Sedimentary Rock Approx 1 3cm
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$69.88
Now:
$34.94
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Eisco Bituminous Coal Specimen (Sedimentary Rock), Approx. 1" (3cm)
Was:
$74.18
Now:
$37.09