Name/Title
FluoriteEntry/Object ID
2014.1.142Description
Common Name: Fluorite
Group Name: Halides
Chemistry: CaF2
Location: Unknown
Description: A single piece of pale sea green Fluorite that has bits of quartz scattered on its surface. Was originally part of a pair, marked as 2014.1.142(A). The subsequent (B) piece was deaccessioned for sale.
PHYSICAL CHARACTERISTICS:
Color is extremely variable and many times can be an intense purple, blue, green or yellow; also colorless, reddish orange, pink, white and brown. A single crystal can be multi-colored.
Luster is vitreous.
Transparency: Crystals are transparent to translucent.
Crystal System: Isometric; 4/m bar 3 2/m
Crystal Habits include the typical cube and to a lesser extent, the octahedron as well as combinations of these two and other rarer isometric habits. Always with equant crystals; less common are crusts and botryoidal forms. Twinning also produces penetration twins that look like two cubes grown together.
Cleavage is perfect in 4 directions forming octahedrons.
Fracture is irregular and brittle.
Hardness is 4
Specific Gravity is 3.1+ (average)
Streak is white.
Other Characteristics: Often fluorescent blue or more rarely green, white, red or violet and may be thermoluminescent, phosphorescent and triboluminescent.
Associated Minerals are many and include calcite, quartz, willemite, barite, witherite, apatite, chalcopyrite, galena, sphalerite, pyrite and other sulfides.
Best Field Indicators are crystal habit, color zoning, hardness (harder than calcite, but softer than quartz or apatite), fluorescence and especially the octahedral cleavage.Collection
RAGM Mineral CollectionAcquisition
Accession
2014.1Source or Donor
Crater Rock Museum (unknown donors)Acquisition Method
GiftOther Names
Name Type
Number on Object/SpecimenOther Name
2014.1.142ALocation
Location
Shelf
CS-I-1Room
Curation StorageBuilding
Crater Rock MuseumDate
February 3, 2024Location
Building
Storage (old gift shop upstairs)Category
Permanent