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Questions and Answers
What physical property of minerals is determined by marking unglazed porcelain or scratching with a knife and observing the powder color?
What physical property of minerals is determined by marking unglazed porcelain or scratching with a knife and observing the powder color?
- Iridescence
- Lustre
- Streak (correct)
- Color
Which mineral group is known for its platy structure and perfect cleavage, often used in electrical insulation and heat resistance?
Which mineral group is known for its platy structure and perfect cleavage, often used in electrical insulation and heat resistance?
- Mica group (correct)
- Quartz
- Hornblende
- Augite
What element is NOT commonly found in minerals according to the text?
What element is NOT commonly found in minerals according to the text?
- Potassium
- Silicon
- Calcium
- Copper (correct)
Which physical property of minerals refers to the description of how much a mineral reflects light?
Which physical property of minerals refers to the description of how much a mineral reflects light?
Which of the following minerals might exhibit iridescence, showing rainbow colors either in the interior or on the surface?
Which of the following minerals might exhibit iridescence, showing rainbow colors either in the interior or on the surface?
In terms of physical properties, which mineral group is more likely to have a shiny, metallic lustre?
In terms of physical properties, which mineral group is more likely to have a shiny, metallic lustre?
What is the crystal system of quartz?
What is the crystal system of quartz?
What is the chemical formula of Plagioclase?
What is the chemical formula of Plagioclase?
What is the cleavage of quartz?
What is the cleavage of quartz?
Which mineral family does quartz belong to?
Which mineral family does quartz belong to?
What is the color of pure quartz?
What is the color of pure quartz?
What is the physical property of quartz related to hardness?
What is the physical property of quartz related to hardness?
In which type of rocks is quartz mostly found?
In which type of rocks is quartz mostly found?
What is the crystal system of pyroxene Augite?
What is the crystal system of pyroxene Augite?
Which mineral has a color range from dark green to brown and a hexagonal habit?
Which mineral has a color range from dark green to brown and a hexagonal habit?
What is the specific gravity range of Orthoclase?
What is the specific gravity range of Orthoclase?
Which mineral has a good (prismatic) cleavage and a color that is greyish green and black?
Which mineral has a good (prismatic) cleavage and a color that is greyish green and black?
What is the chemical composition of the Mica Biotite group?
What is the chemical composition of the Mica Biotite group?
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