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Mineral Tenacity and Fracture


Tenacity is the resistance that a mineral uses to breaking, crushing, bending, cutting, or other acts of destruction. Fracture is exactly how the mineral breaks as soon as the tenacious limit has been exceeded.

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Fracture Description
Brittle - Conchoidal an extremely brittle fracture producing small, conchoidal fragments.
Brittle - Irregular very brittle fracture developing irregular fragments
Brittle - Subconchoidal Brittle fracture through subconchoidal fragments
Brittle - Splintery Brittle fracture leave splintery fragments.
Brittle - Sectile Brittle fracture with slightly sectile shavings possible.
Brittle Generally displayed by glasses and most non-metallic minerals.
Brittle - Uneven very brittle fracture creating uneven fragments.
Conchoidal Fractures arisen in brittle materials defined by clearly curving surfaces, (e.g. Quartz).
Conchoidal - Irregular rarely often rare fracture producing small, conchoidal fragments.
Conchoidal - Uneven Uneven fracture producing small, conchoidal fragments.
Elastic pieces which spring back after bending.
Earthy Dull, clay-like fractures with no clearly shows crystalline affinities, (e.g. Howlite).
Even level surfaces (not cleavage) broken in an also pattern.
Fibrous Thin, elongated fractures produced by crystal creates or intersecting cleavages (e.g. Asbestos).
Fragile Crystals with a delicate and also easily injured structure.
Flexible functional fragments.
Friable The crumbly fragmentation of earthy materials or highly fractured minerals.
Granular Fracture surfaces produced by aggregated minerals, (e.g. Granite).
Hackly Jagged, torn surfaces, (e.g. Broken metals).
Irregular level surfaces (not cleavage) broken in an rarely often rare pattern.
Micaceous Fracture the flexable micaceous cleavage fragments.
Malleable Deforms quite than breaking apart through a hammer.
None No fractures
Plastic Deforms choose soft, plastic materials.
Plastic - Splintery Thin, soft flexable, elongated fractures created by intersecting great cleavages or partings (e.g. Hornblende).
Regular flat surfaces (not cleavage) broken in a continuous pattern.
sub Conchoidal Fractures arisen in brittle materials defined by semi-curving surfaces.
Sectile bent shavings or scrapings developed by a knife blade, (e.g. Graphite).
Splintery Thin, elongated fractures created by intersecting an excellent cleavages or partings (e.g. Hornblende).
Sugary Fracture surfaces developed by finely aggregated minerals, (e.g. Enormous anhydrite).
Tough daunting to break apart as shown by fibrous minerals and most metals.
Unknown minerals too small to watch fractures.
Uneven flat surfaces (not cleavage) fractured in an uneven pattern.

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Weak difficult to take care of without resulting in serious harm or damage.

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