Home

Minerals

Rocks

Fossils

Earthquakes

Articles
The Mineral Variscite

Variscite,  an aluminum hydrated phosphate mineral, is rather an uncommon phosphate mineral which people tend to confuse with turquoise. A secondary mineral created by direct deposition from water that is phosphate-rich and reacted with rocks rich in Aluminum environments that are near-surface. It occurs in the form of heaps of fine-grains in crusts and cavity fillings nodules. Variscite frequently contains the white veins belonging to Crandallite, that is a mineral of calcium aluminium phosphate.     

Chemical Formula  
AlPO4·2H2O

Derivation of Name  
It was initially named after the region of Variscia in 1837, whose past name in Germany, was  Vogtland.  Long ago, Variscite was known as Utahlite. Sometimes, materials that could either  be Variscite or turquoise, were sold as "Variquoise". Because of the variety of classic colors you find in Variscite, it has gained popularity over recent years.

Occurrence         
The Variscite mineral wherein iron replaces aluminum in its crystal structure, occurs as glassy nodules, crusts, or veins in near-surface deposits. It gets created by the reaction of phosphate-bearing waters on aluminous rocks, and Strengite, (Wiki description, “a relatively rare iron phosphate mineral with the formula: FePO4 · 2H2O) by alteration of iron-containing phosphates.            

Gemology  
Variscite is occasionally utilized as a semi-precious stone and is admired for carvings and decorative use.

Source 
Famous regions in the Unites States where you find the Variscite mineral are Lucin or Umbria Junction in Utah and Fairfield. . It also occurs in Australia, Germany, Spain, Poland and Brazil.

Mineralogy  
Variscite is quite an uncommon phosphate mineral which is occasionally confused with turquoise, though it is generally greener than turquoise. Variscite is occasionally used as a semi-precious stone. It can create distinguishing and eye-catching color patterns. Now and then it is tainted into other phosphate minerals. This may occur in what were possibly weak layers of a nodule as only parts of the Variscite nodules are distorted. The most widespread transformed mineral is Crandallite, CaAl3 (PO4) 2 (OH) 5-H2O and imparts some nodules a yellow or white layer.

Color           
Usually, Variscite has greener color.

Density                              
2.57 g/cm3

Mohs scale hardness
4.5

Contact Us
Home | Contributers | Policies | Links | Story of Our Name |  FAQs Why the Ads?  ¦   How Can I Help?   ¦  © LearnAboutNature.com