She carefully cataloged each of the Derbyshire spars before adding them to the exhibit.

She used an Iceland spar to demonstrate how polarized light can split into two images through double refraction.

The museum's exhibit featured a rare specimen of Greenland spar from the 19th-century mine.

The geologist carefully chipped a sample of heavy spar from the vein.

We spent the afternoon on the spar deck, watching the gulls circle above the harbor.

The maintenance crew inspected the spar decks after the storm to check for structural damage.

The miner recognized the tabular spar in the outcrop and marked it for further geochemical testing.

The collector carefully brushed dust from the small slab of schiller-spar before placing it under the microscope.

The geologist identified a vein of needle spar running through the limestone.

At dawn, the spar-hawks wheeled above the harbor, searching for breakfast among the fishing boats.