The official definition for the word crystals is a piece of a homogeneous solid substance having a natural geometrically regular form with symmetrically arranged plane faces."
It's the same shape repeated. That's the definition of a pattern.
Yes. Having a crystal structure is part of the definition of a mineral.
By definition, yes. In contrast, aphanitic rocks do not have visible crystals.
There is no clear definition or commonly accepted meaning for "berefringement crystals." It is possible that it may be a typo or a term used in a specific, niche context. Without further context or clarification, it is difficult to provide a specific explanation for what "berefringement crystals" may refer to.
Pretty much all of them with the exception of things like obsidian, which is a glass and by definition not crystalline. Note that the crystals in question may be extremely small (microcrystalline).
Deposit of infinitesimal ice crystals fashioned when water steam condenses at warmth lower chilly.
Frozen precipitation in the form of white or translucent hexagonal ice crystals that fall in soft, white flakes.
Atmospheric water vapor frozen into ice crystals and falling in light white flakes or lying on the ground as a white layer.
By definition, a glass has little or no microscopic or molecular structure, although most glasses contain crystals or crystaline regions, often at a microscopic level, but these will be randomly distributed. Crystals are not glasses. Glasses are not crystalline.
It is not scientific, it is plain and simple. Snowflakes are two snow crystals that when supercooled as entering the atmosphere freeze into different shapes and sizes.
Crystals are composed of repeating patterns of atoms or molecules arranged in a regular structure. Common mineral components of crystals include quartz, feldspar, calcite, and halite. These minerals form unique crystal shapes and structures based on their atomic arrangement.
Yes. All rocks are made from crystals, because all rocks are made of minerals. The definition of a mineral is an inorganic substance with a crystaline structure and certain chemical and physical properties. The term inorganic is controversial, but those are just geologists that have nothing better to do.