Question : Which of the following is a yellowish green to green coloured gemstone often found in mafic and ultramafic igneous rocks such as basalt, gabbro, dunite, diabase and peridotite?
Option 1: Bornite
Option 2: Olivine
Option 3: Tremolite
Option 4: Garnet
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Correct Answer: Olivine
Solution : The correct option is olivine .
Olivine is a green to yellowish-green mineral commonly found in mafic and ultramafic igneous rocks, including basalt, gabbro, peridotite, and dunite. Its distinctive colour comes from its high iron content. Peridot, a gem-quality variety of olivine, is prized for its vibrant green hue and is often used in jewellery.
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