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Aragonite Reference Libraries

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Blue Coral
2012-04-03 14:51:27

Blue Coral, (Heliopora coerulea), is a species of coral in the Helioporidae family. It is commonly found in shallow coral reefs and is found extensively throughout the Indo-Pacific including the Ryukyu Islands in southwest Japan, the Coral Sea in northeast Australia, and American Samoa. The largest known blue coral colony in the world is off Ishigaki Island of the Yaeyama Islands in southwest...

Aragonite
2005-05-26 12:17:18

Aragonite is a polymorph of the mineral calcite, both having the chemical composition CaCO3. Its structure differs from calcite and leads to a different crystal shape, an orthorhombic system with acicular crystals. By repeated twinning pseudo-hexagonal forms result. It may be columnar or fibrous, occasionally in branching stalactitic forms called flos-ferri (flowers of iron) from their...

Word of the Day
endocarp
  • The hard inner (usually woody) layer of the pericarp of some fruits (as peaches or plums or cherries or olives) that contains the seed.
This word comes from the Greek 'endon,' in, within, plus the Greek 'kardia,' heart.
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