Calcium vs Rabejacite - What's the difference?
calcium | rabejacite |
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=
, magazine=(American Scientist), title= (countable) An atom of this element.
(mineralogy) An orthorhombic mineral containing calcium, hydrogen, oxygen, sulfur, and uranium.
As nouns the difference between calcium and rabejacite
is that calcium is 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 while rabejacite is an orthorhombic mineral containing calcium, hydrogen, oxygen, sulfur, and uranium.calcium
English
Noun
(wikipedia calcium) (Symbol'': ''Ca )Katie L. Burke
In the News, passage=Oxygen levels on Earth skyrocketed 2.4 billion years ago, when cyanobacteria evolved photosynthesis:
