sodalite

Sodalite or hauyne may also be present, but nepheline is typically absent.

When that happens I tell everyone in the shop to put a piece of sodalite in their pocket to keep them grounded.

It is sometimes mistaken for sodalite and has been used as imitation lapis lazuli.

Sodalite is typically present, but not diagnostic.

Biotite, cancrinite and sodalite are characteristic of this rock.

Sodalite's six directions of poor cleavage may be seen as incipient cracks running through the stone.

Minerals showing such behavior include hackmanite sodalite, spodumene and tugtupite.

Sodalite is a rich royal blue mineral widely enjoyed as an ornamental gemstone.

Much sodalite will also fluoresce a patchy orange under UV light.

The inner cavity has a diameter of 12 Å and is surrounded by 10 sodalite cages.

Haüyne forms a solid solution with nosean and with sodalite.

It is an abundant element that exists in numerous minerals such as feldspars, sodalite and rock salt.

These last consist of an intermixture of nepheline or sodalite and alkali-feldspar.

Eventually, sodalite is found along hydrothermal fractures.

It is essentially a microcline, sodalite and cancrinite variety of nepheline syenite.

This distinguishes haüyne from sodalite, which forms cubic crystals of chlorite under the same conditions.

Well known for its blue color, sodalite may also be grey, yellow, green, or pink and is often mottled with white veins or patches.

Tugtupite is tenebrescent, sharing much of its crystal structure with sodalite, and the two minerals are occasionally found together in the same sample.

In nature it is frequently altered to zeolites (especially natrolite), sodalite, kaolin, or compact muscovite.

The Ice River complex, near Golden, British Columbia, contains sodalite.

Although very similar to lazurite and lapis lazuli, sodalite is never quite comparable, being a royal blue rather than ultramarine.

A significant deposit of the semi-precious mineral Sodalite is located near Mont-Saint-Hilaire.

A light, relatively hard yet fragile mineral, sodalite is named after its sodium content; in mineralogy it may be classed as a feldspathoid.

Clerk: It's sodalite.

It may be substituted by spinel or sodalite, or by dyed jasper or howlite.