those minerals which contain metal are called ______.
metallic minerals
iron is used to make ______ which is used in a wide range of applications.
steel
_______ are valuable natural resource.
minerals
_______ is a soft brown metal found in igneous and metamorphic rocks.
copper
_____ has became so important in modern world.
tin
Hematite content ______ iron.
70%
__________ is the most important industrial ore.
Magnetite
______ is used as a major component in tools, machines, automobiles, ships and much more.
iron
_________ is also an important industrial ore.
Hematite
___________ is found in sedimentary rocks.
limonite
industry depends on about _____ of them.
80
Pewter, an alloy is made by mixing tin with antimony, lead and bismuth. TRUE OR FALSE.
TRUE
A _________ is a pure inorganic substances that occurs naturally in the earth's crust.
minerals
_______ is very light,sot,malleable and durable.
Aluminium
copper is used in electrical,automobile and steel industry. TRUE OR FALSE.
TRUE
those which do not have metal content are called _______.
non-metallic minerals
minerals from which metals can be profitable extracted are called ______.
ores
metallic minerals are called ______ if they have iron content and _________ in the absence of iron.
ferrous and non-ferrous
Magnetite content _______ iron
72%
________ content less iron than _______.
limonite and 50%
_______ is the most useful mineral.
iron
minerals are of two types ________ and __________
metallic and non-metallic
__________ has a low iron- content about ______ - ______.
siderite and 20%-30%
more than ______ minerals have been identified till yet
2000