Acicular (crystal habit)
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In mineralogy, acicular refers to a crystal habit composed of slender, needle-like crystals. Crystals with this habit tend to be fragile; complete, undamaged acicular specimens are uncommon.
Natrolite showing acicular crystal habit
Needle-shaped acicular millerite crystals on white quartz
Crystal habit
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In mineralogy, crystal habit is the characteristic external shape of an individual crystal or aggregate of crystals. The habit of a crystal is dependent on its crystallographic form and growth conditi
Acicular (crystal habit)
…In mineralogy, acicular refers to a crystal habit composed of slender, needle-like crystals. Crystals with this habit tend to be fragile; complete, undamaged acicular specimens are uncommon. The term…
Smoky quartz with spessartine on top of feldspar matrix, featuring different crystal habits (shapes)
Goethite replacing pyrite cubes
Scolécite 2