conchoidal

It has a conchoidal fracture and does not show cleavage.

It has no cleavage and is brittle to conchoidal fracture.

Conchoidal fractures can also occur in other materials under favorable circumstances.

The mineral is brittle, with an uneven to conchoidal fracture.

It forms green to orange yellow masses with conchoidal fracture.

It has a conchoidal, uneven fracture, and an orthorhombic crystal system.

It has one direction of perfect cleavage and exhibits conchoidal fracture.

Its fracture is conchoidal, but difficult to obtain.

Its has a conchoidal fracture, a vitreous luster and a white streak.

Conchoidal fracture describes the way in which materials break when they do not follow the natural planes of separation.

The light of the risen moon fell within the amphitheater and full upon the conchoidal walls.

This results in conchoidal fractures, a characteristic of all minerals with no cleavage planes.

There is no very distinct cleavage and the fracture is conchoidal.

Other conchoidal features include small fissures emanating from the bulb of percussion.

It is opaque, can be of any colour and breaks with a conchoidal or stony fracture.

Charoite is strictly massive in nature, and fractures are conchoidal.

As these materials lack natural planes of separation, conchoidal fractures occur when they are struck with sufficient force.

It has a relatively high specific gravity of 6.1, imperfect cleavage and a brittle to conchoidal fracture.

Vanadinite is very brittle, producing small, conchoidal fragments when fractured.

It fractures in a conchoidal pattern.

Its hardness is usually between five and six with two cleavage plains and conchoidal fracture.

They have a conchoidal fracture.

Cubic zirconia has no cleavage and exhibits a conchoidal fracture.

Like all glass and some other types of naturally occurring rocks, obsidian breaks with a characteristic conchoidal fracture.

Pimelite breaks with an uneven to conchoidal fracture, but it shows no cleavage.