Information about Natrolite

Natrolite is a beautiful, typically white to colourless mineral that often forms in radiating fibrous aggregates, acicular (needle-like) crystals, or massive botryoidal crusts.

It has a silky to vitreous lustre, especially when viewed under proper lighting.

The delicate sprays of crystals can appear snowflake-like or hair-like, and they frequently occur in geodes, cavities, or vesicles within volcanic rocks such as basalt.

It is a member of the zeolite group, well known for its elegant crystal formations and association with other zeolites like stilbite or heulandite.

Uses and History

Primarily collected for its aesthetic value, natrolite is a favourite among mineral enthusiasts and micromount collectors. Its delicate crystal sprays make it a highly prized specimen for display.

Natrolite was first described in 1803 by German mineralogist Martin Heinrich Klaproth. The name derives from the Greek “natron” (sodium) and “lithos” (stone), referring to its sodium content.

Natrolites type locality is Hohentwiel, Singen, Germany.

Mineralogy

Hazards and Warnings

Mineral collectors should wash their hands after handling specimens, to avoid any exposure to potential toxins.

Almost all rocks, minerals (and, frankly, almost all other substances on earth) can produce toxic dust when cutting, which can cause serious respiratory conditions including silicosis.

When cutting or polishing rocks, minerals, shells, etc, all work should be done wet to minimise the dust, and a suitable respirator or extraction system should be used.

Translations

Further Reading / External Links

• https://en.wikipedia.org/wiki/Natrolite
• https://www.mindat.org/min-2947.html
• https://www.webmineral.com/data/Natrolite.shtml