acicular

Example Sentences

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Usually of a white or light greenish color and vitreous lustre, in acicular crystallizations.

From The Elements of Blowpipe Analysis by Getman, Frederick Hutton

It can readily be recognised by its acicular, needle-like leaves, and more particularly by its peculiarly shaped seed vessel, which resembles the pattern on an old-fashioned Indian shawl.

From Getting Gold: a practical treatise for prospectors, miners and students by Johnson, J. C. F. (Joseph Colin Frances)

Minute acicular or dendritic crystalline forms sometimes observed in glassy volcanic rocks.

From Webster's Unabridged Dictionary (2nd 100 Pages) by Webster, Noah

In igneous rocks of all kinds it is invariably present in small amounts as minute acicular crystals, and was one of the first constituents of the rock to crystallize out from the magma.

From Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 2 "Anjar" to "Apollo" by Various

Delicate acicular crystals of considerable length were found long ago in the Pentire Glaze mine near St Minver in Cornwall.

From Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 7 "Cerargyrite" to "Charing Cross" by Various