MineralsGroup4

Ok looks very neat and organized however the top paragraph you just need the first sentence to define a mineral. The rest of the info belong under physical properties. Phys prop should be a rather extensive section. Also add some links and some pics or videos to jaz it up

A mineral is a naturally ocuring, inorganic solid with a specific chemical composition and a definite crystalline structure. Color is not always a good clue to the identity of a mineral. Many minerals are found in several colors and many minerals have extra chemicals in them that give them an unexpected color. Chemical Properties of a Mineral- 1.occurs naturally 2. is a solid 3. has a definite chemical composition (That is,its elements are combined in definite proportions) 4. has its atoms arranged in an orderly pattern 5. is inorganic (it was not formed by any process involving plants, animals or other organisms) 6. Minerals are often dissolved in water. 7. Minerals crystallize when the solution in which are dissolve evaporates. 8.  mostly hard 9. comes in different color 10. metallic/nonmetallic luster 



Mineral Families- Th e most important mineral family is the. The silicates are a combination of silicon, oxygen, and another element. Depending on the element, the resulting mineral's density and color can vary considerably. The silicates are subdivided into the ferromagnesian and the nonferromagnesian (or aluminosilicates). A tetrahedron nis a geometric solid having four sides that are equilateral triangle, resembling a pyramid.

Physical Properties of Minerals- Physical Properties of Minerals are Color, Luster, streak, crystal form, hardness, cleavage and fracture. .  Luster is the way that a mineral reflects light from its surface. Hardness is a measure of how easily a mineral can be stretched. Cleavage is a mineral that splits relatively easily and evenly along one or more flat planes. Fracture are minerals that break with rough and jagged edges. Streak is the color of a mineral when it is broken up and powdered.

Special properties- Special properties of minerals are magnetism, double refraction, striations, effervescence with hydrochloric acid and florescence. Magnetism occurs between minerals that contain iron. Magnetite and phryhotite are extremely magnetic. Double refraction occurs when a ray of light passes through the mineral and is split into two rays. Effervescence occurs when reaction with hydrochloric acid causes calcite to fizz. Fluorescence occurs when some minerals are exposed to ultraviolet light. Change 0 of 0 [|<< First] [|< Previous] [|Next >] [|Last >>]