Composition control of weld metal is often performed to maximise the volume fraction of acicular ferrite due to the toughness it imparts.
32.
When writing for mineralogical publications, authors should restrict their usage of " acicular " to crystals with the tapering growth habit.
33.
It is a colorless to white mineral crystallizing in the monoclinic crystal system typically occurring as prismatic to acicular crystals or granular masses.
34.
Both selenite crystals and gypsum flowers sometimes form quite densely in acicular mats or nets; and can be quite brittle and fragile.
35.
Crystals of brochantite can range from emerald green to black-green to blue-green, and can be acicular or prismatic.
36.
"' Millerite "'is a nickel sulfide mineral, acicular habit, often forming radiating masses and furry aggregates.
37.
There are different crystals habits like adularia, larger, stout crystals ( Spencer, 1941 ), and long, slender to acicular.
38.
In the Silurian New York strontianite is observed in cavities in eastern Lockport, where it occurs as small white radiating sprays of acicular crystals.
39.
In this example, the black pigments are the small black dots; red pigments are larger spheres, while the yellow pigments are acicular.
40.
In groups of acicular crystals it is frequently seen penetrating quartz as in the " fl�ches d'amour " from Graub�nden, Switzerland.
