calcite
calcspar
calc spar , auch: calc-spar

In 1910 it was reborn with the new name of Calcite.

They used clear calcite crystals to form the lenses of their eyes.

Always remember to keep clear of the soft calcite shell with these tools.

This name is also given to a white powdery variety of calcite.

The water, the calcite and the colours do not cause pollution.

Their progress was stopped by a large calcite wall.

The second factor has to do with the particular form in which calcite crystallizes.

It is soft, with hardness only 3, the same as calcite.

The individual calcite plates of which the fossil is composed can be clearly seen.

"Sometimes you see white calcite deposits shot through it."

The lenses of the eye were constructed from single calcite crystals.

Calcite is one of the most widely distributed minerals on the Earth's surface.

Numerous calcite formations can be seen in this area of the cave.

Large calcite crystals have been collected from the railroad cut along the base.

Who knows how many more bones are beneath these, cemented in the calcite?

She regularly visited the cave and collected pieces of calcite.

Calcite, another mineral with an optical property often illustrated in the same way.

Other minerals, such as calcite, tend to emit less on cooling.

Stem, calyx, and arms are all made of calcite plates.

When the calcite forms it incorporates uranium dissolved in the ground water.

Of the two, calcite gives better results and is widely used by experienced gemologists.

The mineral is soft, with hardness 2.5 to 3, a little less than that of calcite.

Pottery was made without throwing, with a mixture of calcite, and burnt on an open fire.

Evidence of calcite rafts has been found in limestone caves all over the world.

Unusual concretions, composed of calcite, can be found near this river.