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Calcium vs Holfertite - What's the difference?

calcium | holfertite |

As nouns the difference between calcium and holfertite

is that calcium is calcium while holfertite is (mineral) a trigonal-pyramidal mineral containing calcium, hydrogen, iron, oxygen, potassium, titanium, and uranium.

calcium

English

Noun

(wikipedia calcium) (Symbol'': ''Ca )
  • A chemical element, atomic number 20, that is an alkaline earth metal and occurs naturally as carbonate in limestone and as silicate in many rocks.
  • * {{quote-magazine, year=2013, month=September-October, author= Katie L. Burke
    • , magazine=(American Scientist), title= In the News , passage=Oxygen levels on Earth skyrocketed 2.4 billion years ago, when cyanobacteria evolved photosynthesis:
  • (countable) An atom of this element.

    • Derived terms

    * bismuth strontium calcium copper oxide * calc-, calci- * calcic * calcio- * * * * * * * * calcium arsenate * calcium carbide * calcium carbonate * calcium chloride * calcium cyanamide * calcium dihydrogen phosphate * calcium fluoride * calcium hydride * calcium hydroxide * calcium light * calcium magnesium carbonate * calcium magnesium silicate * calcium nitrate * calcium oxide * calcium peroxide * calcium phosphate * calcium phosphide * calcium platinate * calcium sulfate, calcium sulphate * calcium sulfide, calcium sulphide * calcium tungstate * dicalcium * monocalcium * oxycalcium * tricalcium

    Related terms

    * BSCCO * * calcia * calcite * calx * calculus

    References

    External links

    See also

    * chalk * lime * limestone ----

    holfertite

    English

    Noun

  • (mineral) A trigonal-pyramidal mineral containing calcium, hydrogen, iron, oxygen, potassium, titanium, and uranium.

    • References

    * Holfertite in the Mineralogy Database: [http://webmineral.com/data/Holfertite.shtml]