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What mineral family can the Mica mineral change to when Gneiss is formed?
The Mica mineral can change to the mineral group known as amphiboles when Gneiss is formed. This transformation occurs due to the high pressure and temperature conditions during the metamorphic process.
What is a mineral that is after phyllite and before gneiss?
Not a mineral but a rock. Schist comes asfter phyllite ut before gneiss.
What group is gneiss in?
A Gneiss is a Metamorphic rock
Which mineral is commonly found in the three metamorphic rocks slate schist and gneiss?
The mineral commonly found in all three metamorphic rocks slate, schist, and gneiss is mica. Mica is a group of minerals known for their perfect cleavage, flexibility, and mineral composition, which make them prevalent in metamorphic rocks.
What does the Canadian Shield contain much of?
Gneiss and mineral deposits.
Which mineral can be found in granite andesite gneiss and hornfels?
The mineral found in granite, andesite, gneiss, and hornfels is feldspar. It is a common mineral in these rock types and can exist in different varieties such as orthoclase, plagioclase, or potassium feldspar.
What two minerals are found in gneiss that contain iron and magnesium?
The two minerals commonly found in gneiss that contain iron and magnesium are biotite, a dark-colored mica mineral rich in iron and magnesium, and amphibole, a group of dark-colored mineral silicates that also contain iron and magnesium.
What is the texture of the gneiss rock?
Gneiss rock typically has a coarse texture due to its mineral composition of interlocking grains of quartz, feldspar, and mica. This gives it a banded or foliated appearance, with distinct layers or bands of different mineral compositions.
What rock group does gneiss?
Metamorphic
What mineral is common in schist and gneiss but not common is slate and phyllite?
The mineral common in schist and gneiss but not common in slate and phyllite is garnet. Garnet typically forms in higher-grade metamorphic rocks such as schist and gneiss due to the increased temperature and pressure conditions necessary for its formation.
What type of crystals does gneiss rock have?
Gneiss usually consists of visible crystals of aligned mineral assemblages.
Does gneiss have fracture?
Yes, gneiss can exhibit fractures due to tectonic stresses or weathering processes. The type and extent of fractures in gneiss can vary depending on factors such as mineral composition, pressure, and temperature conditions during formation.
