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Minerals are said to (blank) if they do not show cleavage when broken?
Solids that are amorphous. Of which perhaps glass is the best known example. [But glass is not a mineral] Materials such as TiO2 are amorphous solids.
Why does mineral cleavage occur?
Cleavage planes occur due to a weakness or propensity to fracture in a crystalline structure.
What is the cleavage of emerald?
Emerald has poor cleavage. It typically fractures in a conchoidal or irregular manner rather than along smooth, distinct planes like some other gemstones.
What is sulfur's cleavage?
Sulfur does not have cleavage because it is not a mineral. Instead, sulfur has a non-crystalline or amorphous structure. When broken, it tends to fracture along irregular surfaces rather than cleave along specific planes.
Why would cleavage be important to gem cutters who cut shape gemstones?
It would be important because cleavage is a tendency of some minerals to break along smooth, flat surfaces.
What is the cleavage of bauxite?
Bauxite does not exhibit a distinct cleavage because it is an amorphous material formed from a mixture of different minerals, primarily aluminum oxides and hydroxides, along with impurities. Cleavage is a property of crystalline materials in which the crystal breaks along specific planes due to the arrangement of atoms.
How do crystalline solids differ from amorphus solids?
Crystalline solids have a well-ordered arrangement of particles in a repeating pattern, leading to defined geometric shapes and distinct melting points, whereas amorphous solids lack a long-range order in their atomic structure, resulting in a random arrangement of particles and no sharp melting point. Crystalline solids exhibit cleavage and anisotropy, while amorphous solids do not have cleavage planes and display isotropic properties.
What is the differences between amorphous and crystalline solids?
A crystalline solid is one where the molecules are arranged in a regular repeating pattern, leading to a rigid and stable structure. An example is diamonds or table salt. An amorphous solid have a shape that may change over time. An example is glass in a window.
What forms does carbon occur in?
Diamont, graphite, carbon black (amorphous), fullerene, etc.
Why are opals amorphous?
Opals are amorphous because they lack a crystalline structure. Their formation involves the precipitation of silica spheres in a disordered arrangement, which gives opals their unique play-of-color appearance. This lack of a crystal lattice is what differentiates them from most other gemstones.
What is more common a cleavage or fracture?
A fracture is more common than a cleavage. Fractures occur when a material breaks without any predetermined pattern, whereas cleavages occur along specific planes due to the arrangement of atoms in the material.
Where do gene mutations occur?
on a gene it can occur on the promoter, intron-exon borders, poly-A-tail cleavage sites and on the exon
