vitreous
The crystals may display a "Crescumulate texture".
Foliated metamorphic rocks exhibit a layering affect with parallel layers of mineral crystals one on top of the other. A good example of this is gneiss, which has alternating layers of light and dark minerals. Foliation takes place when pressure is applied to crystals and they recrystallize or align themselves at right angles to the direction of the applied directional stress.
Exhibit Piece was created in 1954.
primary tissue types that exhibit cellularity
Yes, all epithelial exhibit what is called apical-basal polarity
What rocks contain crystals?
The fracture is conchoidal, a very useful property to stone tool makers.
yes, they do.
whoever knows please answer below :P
The crystals may display a "Crescumulate texture".
You can find natural crystals most anywhere in the world, depending on what kinds of crystals you want to see. Or your can visit a local natural history museum, a local meteorological exhibit.
Geodes are rocks that are lined or filled with crystals. Pegmatites are rock formations that often exhibit extremely large crystals. Just a note--all rocks are composed of mineral crystals, with few exceptions. The crystals in some, however are just too small to see.
This is termed fracture, eg. the conchoidal fracture of obsidian. Breaking into pieces with straight lines and flat faces is called cleavage; minerals like calcite and fluorite exhibit excellent cleavage.
Coarse grained.
Coarse grained.
Foliated metamorphic rocks exhibit a layering affect with parallel layers of mineral crystals one on top of the other. A good example of this is gneiss, which has alternating layers of light and dark minerals. Foliation takes place when pressure is applied to crystals and they recrystallize or align themselves at right angles to the direction of the applied directional stress.
Igneous rocks usually contain the most crystals. The longer it takes the magma to cool, the larger the crystals. According to the Earth Science Reference Tables, pegmatite contains the largest crystals.