Introductory Lecture🗿 Flashcards
Why does Calcite fizz when diluted HCL is poured onto it ?
Because CaCO3 reacts with HCL to form CO2
Which of these processes is not associated with the formation and weathering of extrusive igneous rock ?
Foliation
The process path of an igneous rock
Cooling of magma-crystallisation
What is the most common mineral group on Earth ?
Silicate group
Sulphur is a….
Native element
Basalt is an….
Extrusive( at earths surface) igneous rock
Rock salt is a….
Chemical sedimentary rock
What process most often takes place at Earths Surface ?
Mineral formation by evaporation of liquid and chemical precipitation
Mica is a…..
Sheet silicate
Coal is….
Organic
Rock minerals are…..
Inorganic
Quartz is….
Framework silicate
Pyrite is an……
Iron sulphide
Olivine is a……
Silicate with isolated tetrahydra
Marble is an…..
Metamorphic rock ( forms by recrystallisation of limestone at high temp and pressure in Earth )
Granite is an……
Intrusive igneous rock
Which mineral scratches a copper coin, but not the blade of a knife ?
Apatite ( as has a hardness of 5 on the Mohs scale )
What is cleavage ?
Cleavage follows flat planar surfaces with weak bond strength
What are fractures ?
Fractures produce irregular surface planes.
Intrusive igneous rocks have a…
Coarse crystalline texture
Which type of rock is formed during seafloor spreading at mid-ocean ridges ?
Basalt ( extrusive igneous )
What is marble ?
Marble is a metamorphic rock forms from limestone deep in the Earth.
What is Granite ?
Igneous rock that forms in the Earth
What is mudstone ?
Sedimentary
What is the hardness of Diamond ?
10 🔟
What is the hardness of Calcite ?
3
Hardness of Gypsum ?
2
Hardness of Quartz ?
7
