EARTH AND LIFE SCIENCE

​1. Identify common rock-forming minerals using their

physical and chemical properties.

​2. Classify rocks into igneous, sedimentary, and

metamorphic

​3. explain how the products of weathering are

carried away by erosion and deposited elsewhere

​The rocks that you usually see are actually made up of crystalline minerals..

• ​A MINERAL IS NATURALLY-OCCURING

• ​A MINERAL IS INORGANIC

• ​A MINERAL IS HOMOGENOUS SOLID

• ​A MINERAL HAS A DEFINITE CHEMICAL COMPOSITION.

• ​A MINERAL HAS AN ORDERED INTERNAL/CRYSTALLINE STRUCTURE.

​A MINERAL SHOULD BE NATURALLY-OCCURING WITH RESPECT TO ITS FORMATION. IT SHOULD BE MADE BY NATURAL PROCESSES WITHOUT THE AID OF ANY ORGANISM.

​THE PROCESS TO PRODUCE A MINERAL BY NATURAL MEANS IS EXTENDED FURTHER BY MAKING SURE THAT NO ORGANIC MATERIAL (OR WHAT WAS ONCE PART OF AN ORGANISM) BE CONSIDERED A MINERALS.

MINERAL IS HOMOGENOUS SOLID

​WE SHOULD BE ABLE TO SEE SOMETHING THAT IS UNIFORM IN APPEARANCE AND IS IN THE SOLID STATE OF MATTER.

​A MINERAL HAS A DEFINITE CHEMICAL COMPOSITION.

​IT MEANS THAT IF WE ASSIGN A MATERIAL COMPOSED OF ONE ATOM OF IRON AND 2 ATOMS 0F SULFUR WITH THE MINERAL NAME PYRITE, IT SHOUD BE KNOWN THAT ALL MINERAL IDENTIFIED AS PYRITE SHOULD BE COMPOSED OF IRON AND SULFUR IN THAT RATIO.

​A MINERAL HAS A DEFINITE CHEMICAL COMPOSITION.

​THERE ARE, HOWEVER, INSTANCES WE ALLOW MINERALS TO SHARE A COMMON COMPOSITION. THESE MINERALS ARE CALLD POLYMORPHS.

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''GRAPHITE AND DIAMOND"

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​A MINERAL HAS AN ORDERED INTERNAL/CRYSTALLINE STRUCTURE.

​WHAT DO WE MEAN BY CRYSTALLINE?

​

​A MINERAL HAS AN ORDERED INTERNAL/CRYSTALLINE STRUCTURE.

A CRYSTALLINE MATERIAL IS SOMETHING THAT HAS ITS ELEMENTAL COMPONENTS ARRANGED IN A ORDERED FASHION. THIS MEANS THAT THE MATERIAL REPEATS THIS ORDER IN A THREE DIMENSIONAL FRAMEWORK THAT CAN EXTEND VIRTUALLY INTO INFINITY.

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MINERALOIDS