Andesine gemstone

May 23, 2020    gem stone    Comment   

Andesine is a silicate mineral, a member of the plagioclase feldspar solid solution series. Its chemical formula is (Ca, Na)(Al, Si)4O8, where Ca/(Ca + Na) (% Anorthite) is between 30%-50%. The plagioclase feldspars are a continuous solid solution series and as such the accurate identification of individual members requires detailed optical study, chemical analysis or density measurements. Refractive indices and specific gravity increase directly with calcium content.

Andesine feldspar is composed of fifty-70% albite and 30-50% anorthite.

Andesine was first described in 1841 for an occurrence in the Marmato mine, Colombia. It is named after the Andes mountains of South America. The name is for the Andes due to its abundance in the andesite lavas in those mountains.

Andesine is found in a range of colours, from red, honey-red to orange, yellow, champagne and green. In the early 2000s, red and green gemstones began to be marketed under the name of 'Andesine'. After some controversy, these gemstones were subsequently discovered to have been artificially-coloured.

Occurrence

Andesine takes place in intermediate igneous rocks which includes diorite, syenite and andesite. It ordinarily happens in metamorphic rocks of granulite to amphibolite facies generally displaying antiperthite texture. It also occurs as detrital grains in sedimentary rocks. It is normally associated with quartz, potassium feldspar, biotite, hornblende and magnetite.

Andesine Healing Properties

As a protecting stone, carrying andesine jewelry or virtually wearing the stone around will save you the release of essential energies at the same time as also acting to deflect undesirable power. Use while round in particular bad humans or situations. Wearing a labradorite pendant is useful for touchy human beings.

Like all metaphysical crystals andesine gemstone can effect the thoughts, thought-styles, and psychological well-being. This stone acts to connect the intuition with the mind. What impact does this synergy have? It enables innovative notion, which is good for innovators, therapists, writers, and any paintings in which the combination of concrete mind and deeper awareness is favored.

Chemical Formula	(Na,Ca)Al1-2Si3-2O8
Colour	Red, Green, Yellow, Orange, Pink, Multicoloured
Hardness	6 - 6.5
Crystal System	Triclinic
Refractive Index	1.560 - 1.568
SG	2.69 - 2.70
Transparency	Transparent to translucent
Double Refraction	.008
Luster	Vitreous
Cleavage	2,1 - basal ; 2,1 - prismatic ; 3,1 - pinacoidal.
Mineral Class	Plagioclase feldspar (Also see the minerals Andesine and Labradorite))