What is analcime used for?
Analcime is a beautiful crystal that will enhance your creative abilities and boost your focus and concentration. Frequent use of this crystal will also give you a different but positive outlook on life. Analcime can help you build rapport with people that you have only just met.
What is the chemical formula of analcime?
Chemical composition: The compositional range of analcime can be expressed with the generalized formula: |Na16-x (H2O)16+x| [Al16-x Si32+x O96], in which x varies between -3.4 and +4.3.
What mineral group is analcime in?
zeolite group
Analcime is a member of the zeolite group, and often occurs together with other zeolites. However, it is closely related in structure to the feldspathoid group, and is occasionally also classified as a feldspathoid together with the similar mineral Leucite.
Is analcime a zeolite?
Analcime is usually classified as a zeolite mineral, but structurally and chemically it is more similar to the feldspathoids. Analcime occurs as a primary mineral in analcime basalt and other alkaline igneous rocks.
Where is analcime found?
Analcime is found in Trentino, Italy; New Zealand; and Wyoming and Utah in the United States. Although a feldspathoid, analcime is closely related to the zeolite minerals with which it is sometimes classed.
Is analcime rare?
Large colorless crystals of Analcime are a great rarity although small transparent crystals are abundant. Faceted gems are extremely rare and seldom seen even in large collections.
How can you identify a nepheline in a thin section?
Nepheline is colorless under plane polarized light in thin section. Click on the image to see the crystal under crossed polars. This hexagonal crystal is oriented with its optic axis vertical. Nepheline (K-21) is colorless when viewed under plane polarized light.
How do you identify a nepheline?
Description and properties Nepheline is found in compact, granular aggregates, and can be white, yellow, gray, green, or reddish. Its hardness on the Mohs scale is 5.5–6, and its specific gravity 2.60–2.65. It is often translucent with a greasy luster.
Where is Analcime found?
Is Analcime rare?