Ch 5 Minerals And Industries Flashcards
Name Some abrasive minerals are..???
Silica
Limestone
Aluminium oxide
Phosphate minerals
They do the cleaning.
Name the mineral which comes from Fluorite and it reduces cavities.
Fluoride
Name the mineral due to which toothpastes are made white.
Titanium oxide
It comes from minerals called Rutile
Ilmenite
Anatase
Name the mineral due to which toothpastes sparkles
Mica
What are Minerals??
Homogenous, Naturally occuring substance with a definable internal structure.
What’s Rocks?
Rocks are combinations of homogenous substances called minerals
On which properties geologists classify the minerals??
Range of colours
Hardness
Crystal form
Lustre
Density that a mineral possess
What is ore?
It is used to describe an accumulation of any mineral mixed with other elements.
What must be sufficient concentration to make its extraction commercially viable?
Mineral content of ore
Where does Igneous and metamorphic rocks occur??
In the cracks, crevices, faults and the joints.
What’s veins?
Smaller Occurrences
What’s lodes??
Larger occurrences
Name Some minerals obtained from lodes and veins ???
Metallic minerals like
Tin
Copper
Zinc
Lead
How are Igneous and metamorphic rocks formed??
When minerals (in liquid, molten and gaseous forms) are forced upwards ⬆️ through cavities towards the earth’s surface.
They finally cool and solidify as they rise.
Where does sedimentary rocks occur ?
In beds or layers .
They are formed due to deposition, Accumulation and Concentration in Horizontal strata..
For eg coal and iron ore conc due to long periods under heat and pressure
Name Some sedimentary minerals??
Gypsum
Potash salt
Sodium salt
How is bauxite(non ferrous) formed??????????
Step 1
Decomposition of surface rocks
Step 2
Removal of soluble constituents
Step 3
Leaving a residual mass of weathered material containing ores
Where does alluvial deposits occur??
In sands of valley floors and the base of hills