Calcium vs Shafranovskite - What's the difference?
calcium | shafranovskite |
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) A trigonal-ditrigonal pyramidal mineral containing aluminum, calcium, hydrogen, iron, magnesium, manganese, oxygen, potassium, silicon, and sodium.
As nouns the difference between calcium and shafranovskite
is that calcium is calcium while shafranovskite is (mineralogy) a trigonal-ditrigonal pyramidal mineral containing aluminum, calcium, hydrogen, iron, magnesium, manganese, oxygen, potassium, silicon, and sodium.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: