Name/Title
Fluorite on QuartzEntry/Object ID
2023.7.50Description
About Fluorite
Formula:CaF2.
As a Commodity: Fluorite (Fluorspar)
Colour: Purple, lilac, golden-yellow, green, colourless, blue, pink, champagne, brown.
Lustre: Vitreous, Dull
Hardness: 4
Specific Gravity: 3.175 - 3.56
Crystal System: Isometric
Member of: Fluorite Group
Name: Named in 1797 by Carlo Antonio Galeani Napione from the Latin, fluere = "to flow" (for its use as a flux). The term fluorescence is derived from fluorite, which will often markedly exhibit this effect. The element fluorine also derives its name from fluorite, a major source of the element.
Co-Type Localities: Jáchymov, Karlovy Vary District, Karlovy Vary Region, Czech Republic
ⓘ Breitenbrunn, Breitenbrunn, Erzgebirgskreis, Saxony, Germany
Fluorite Group.
Fluorite is found as a common gangue mineral in hydrothermal veins, especially those containing lead and zinc minerals. It is also found in some greisens, granites, pegmatites and high-temperature veins, and as a component of some marbles and other metamorphic rocks.
"(...) the F−…F− interaction has properties associated with the recently recognized type of interaction referred to as 'charge-shift' bonding".(...) integrated experimental charges for Ca2+ and F− ions are +1.40 e and −0.70 e, respectively (Stachowicz et al., 2017).Collection
John Morrow CollectionLocation
Location
Display Case
DS-10Room
Delmar Smith HallBuilding
Crater Rock MuseumCategory
ExhibitMoved By
Ian C.Date
January 22, 2025Notes
World case installation