When was the fluorite discovered?

April 8, 2020 Off By idswater

When was the fluorite discovered?

One of the largest deposits of fluorspar in North America is located in the Burin Peninsula, Newfoundland, Canada. The first official recognition of fluorspar in the area was recorded by geologist J.B. Jukes in 1843. He noted an occurrence of “galena” or lead ore and fluoride of lime on the west side of St.

What is the history of fluorite?

It is often referred to as ‘the most colorful mineral in the world’ owing to its variety of brilliant colors. Fluorite was first described in 1530 and was originally referred to as ‘fluorspar’. The mineral was strongly noted for its effectiveness as a flux for aluminum and steel processing.

Where is fluorite found in the US?

Country’s leading producer of fluorspar Since the early 1800s, fluorite has been mined in southeastern Illinois. The fluorspar-rich region, which reaches from southeastern Illinois into parts of Kentucky, was called the Illinois-Kentucky Fluorspar Mining District.

What is the rarest color of fluorite?

What is the rarest color of fluorite? Purple or violet is the classic color of fluorite, often competing for richness with amethyst. Blue fluorite is quite rare and collectors are looking for it. The brilliant yellow is very rare as well.

Where is the best fluorite found?

Some of the world’s most prized fluorite specimens come from Swiss and French Alp deposits where the crystals occur as simple octahedrons and range in color from a delicate pink to a rich red. Fluorite is found worldwide in China, South Africa, Mongolia, France, Russia, and the central North America.

Why is fluorite dangerous?

Fluorine is a relatively soluble and highly reactive found within fluorite. Exposure to the chemical can lead to a severe bone disease called skeletal fluorosis, which weakens bones.

Is fluorite dangerous to wear?

Fluorite (CaF2) is a mineral that is listed as being dangerous because it contains the element fluorine, which by itself can be some nasty stuff.

Is fluorite a precious stone?

A plentiful, affordable, and colorful gem, fluorite is popular with collectors worldwide. Also prized for its color-change and distinctive multi-color banded varieties, this beautiful stone has so many appealing features, it’s no wonder that Roman historian Pliny the Elder named fluorite his “most precious substance.”

Is fluorite a dangerous crystal?

How can you tell if fluorite is real?

Real fluorite glows under ultraviolet light. Fluorite hardness is very low, so there will be a lot of tiny scratches on the surface of real fluorite. Fake fluorite is mostly represented by glass or plastic. Fake fluorite made of glass can have bubbles and doesn’t glow under UV light.

When did fluorite become the state mineral of Illinois?

Illinois’ State Mineral. The General Assembly made fluorite the State Mineral in 1965, when flourspar mining was a multimillion- dollar-per-year industry in Illinois. Over the years, much more fluorite has been mined in Illinois than in any other state.

Where did fluorite come from in the United States?

But open-pit mines operated where fluorite deposits intersected land surface. Illinois displaced Kentucky as the country’s leading producer of fluorite in 1942. For many years, Illinois accounted for more than 50% of total U.S. fluorspar production. But by 1990, more than 90% of the fluorite used in the U.S. was imported.

When was fluorite first discovered in Hardin County?

Fluorite was originally named fluorspar and was first discussed in print in 1530 book about the properties of minerals by Georgius Agricola. The written history of the earliest mining in Hardin County is scanty and confusing.

Where did fluorite crystallize in the Mississippian rocks?

When the hot brines reached the calcium-rich Mississippian rocks, the temperature and other conditions were just right for crystallizing fluorite along the walls of the faults and in flat-lying layers parallel to the beds of limestone. These host rocks dissolved and were replaced with the fluorite.

When did they start mining fluorite in Illinois?

The first shipments of fluorspar were reportedly made in the early 1870s. The open-hearth steel furnace process, which was introduced in the 1880s, used fluorite for flux, increased demand considerably, and large-scale mining for fluorite began in Illinois soon after.

Fluorite was originally named fluorspar and was first discussed in print in 1530 book about the properties of minerals by Georgius Agricola. The written history of the earliest mining in Hardin County is scanty and confusing.

How is fluorite used in an industrial process?

Fluorite is an important industrial mineral composed of calcium and fluorine (CaF 2 ). It is used in a wide variety of chemical, metallurgical, and ceramic processes. Specimens with exceptional diaphaneity and color are cut into gems or used to make ornamental objects. Fluorite is deposited in veins by hydrothermal processes.

Who was the first person to discover fluorite?

In 1852, George Gabriel Stokes discovered the ability of specimens of fluorite to produce a blue glow when illuminated with light, which in his words was “beyond the violet end of the spectrum.”. He called this phenomenon “fluorescence” after the mineral fluorite.