
1) Carbonate 2) Chalky 3) Sedimentary rock
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https://www.crosswordclues.com/clue/calcareous

1) Chalky
Found on
https://www.crosswordclues.com/clue/calcareous

composed of or containing lime or limestone
Found on
http://florabase.dpaw.wa.gov.au/help/glossary

Containing an excess of available calcium
Found on
http://orchidfetish.com/glossary.html

• (a.) Partaking of the nature of calcite or calcium carbonate; consisting of, or containing, calcium carbonate or carbonate of lime.
Found on
http://thinkexist.com/dictionary/meaning/calcareous/

An excess of lime, as in soil.
Found on
http://www.anbg.gov.au/cpbr/cd-keys/orchidkey/html/glossary.html

Chalky; relating to or containing lime or calcium, or calcific material. ... Origin: L. Calcarius, pertaining to lime, fr. Calx, lime ... (05 Mar 2000) ...
Found on
http://www.encyclo.co.uk/local/20973

(kal-kar´e-әs) pertaining to or containing lime; chalky.
Found on
http://www.encyclo.co.uk/local/21001

Describing soil or water with a high CaCO
3 (lime) content.
Found on
http://www.encyclo.co.uk/local/22034

Formed of calcium carbonate or magnesium carbonate by biological deposition or inorganic precipitation in sufficient quantities to effervesce carbon dioxide visibly when treated with cold 0.1 normal hydrochloric acid. Calcareous sands are usually formed of a mixture of fragments of mollusk shell, echinoderm spines and skeletal material, coral, fora...
Found on
http://www.encyclo.co.uk/local/22040

limy, rich in calcium, usually in the form of calcium carbonates.
Found on
http://www.encyclo.co.uk/local/22043

Calcium-bearing rock.
Found on
http://www.encyclo.co.uk/local/22192

Containing the compound calcium carbonate.
Found on
http://www.encyclo.co.uk/local/22291
Cal·ca're·ous adjective [ Latin
calcarius pertaining to lime. See
Calx .] Partaking of the nature of calcite or calcium carbonate; consisting of, or containing, calcium carbonate or carbonate of lime.
Calcareous spar .
See as Calcite . Found on
http://www.encyclo.co.uk/webster/C/6

Containing an excess of available calcium
Found on
http://www.orchidspecies.com/glossary.htm

Calcareous refers to containing calcium carbonate or calcite.
Found on
http://www.probertencyclopaedia.com/browse/HC.HTM

Term used to describe a structure, secreted by an organism, that consists of or contains calcium carbonate (CaCO3), such as a seashell.
Found on
http://www.scientificpsychic.com/etc/geology-glossary.html

Calcium-bearing rock.
Found on
http://www.selectstone.com/architectural-resources/stone-glossary/

adj. Term used to describe a structure, secreted by an organism, that consists of or contains calcium carbonate (CaCO3), e.g., the shell of a bivalve.
Found on
http://www.ucmp.berkeley.edu/glossary/gloss2geol.html

adj. Term used to describe a structure, secreted by an organism, that consists of or contains calcium carbonate (CaCO3), e.g., the shell of a bivalve.
Found on
http://www.ucmp.berkeley.edu/glossary/glossary_2.html

calcite-rich.
Found on
https://www.encyclo.co.uk/local/20132

Generally alkaline soils.
Found on
https://www.encyclo.co.uk/local/20499
chalky adjective composed of or containing or resembling calcium carbonate or calcite or chalk
Found on
https://www.encyclo.co.uk/local/20974

Containing calcium carbonate or, less generally, containing the element calcium.
Found on
https://www.encyclo.co.uk/local/21066

Containing calcium carbonate, or less generally, containing the element calcium.
Found on
https://www.encyclo.co.uk/local/21122
No exact match found.