Villiaumite from Russia, Kola Peninsula

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Villiaumite

http://www.mindat.org
Named after Maxime Villiaume, French explorer and officer in the colonial artillery corps stationed in northern Madagascar
for his help in the acquisition of mineral and rock collections from Madagascar and Guinea. The species was first found in
his collection.

http://webmineral.com
Cleavage: [100] Perfect, [010] Perfect, [001] Perfect
Color: Colorless, Dark red, Orange brown, Pink.
Density: 2.79 - 2.8, Average = 2.79
Diaphaniety: Transparent
Fracture: Brittle - Generally displayed by glasses and most non-metallic minerals.
Habit: Granular - Generally occurs as anhedral to subhedral crystals in matrix.
Habit: Massive - Granular - Common texture observed in granite and other igneous rock.
Hardness: 2.5 - Finger Nail
Luminescence: Fluorescent.
Luster: Vitreous (Glassy)
Streak: pinkish white

http://en.wikipedia.org
Villiaumite is a mineral composed of sodium fluoride, NaF.

http://www.galleries.com
Villiaumite is another strongly colored Halide mineral. It has a typically bold red "carmine" color that is visually unique. Other
colorful halides include fluorite (mostly purple, also green, yellow, etc), halite (pink), miersite (yellow), atacamite (green) and
boleite (blue) to name a few. Villiaumite's color ranges from the strong red to reddish orange, to lavender pink. It is
commonly found with colorless edges or portions that transition into the strongly colored portions of the crystal.
Fluorescence is observed in many specimens, but is generally only a weak red color under both short and longwave
ultraviolet light.
Villiaumite was named for the French explorer: Villiaume. Although he did not techically discover the mineral; he did collect
some rock samples from Guinea in which the new mineral villiaumite was found. Villiaumite is a rare mineral and is found in
only a few localities. Most massive specimens are coming from the Kola Peninsula where the mineral is associated with
many other rare russian minerals such as nefedovite, lomonosovite, aegirine, fluorcaphite, pectolite, chkalovite and
tuperssuatsiaite.

http://www.mineralgallery
Villiaumite is very rare and is mainly found in small miarolitic cavities in the nepheline syenites of Rouma, Islies de Los,
Guinea, West Africa; in the alkali rocks in the Lovozero and Khibina Massifs, Kola Peninsula, USSR: in the Ilimaussaq
intrusion, Greenland; in saline lake deposits in Magadi area, Kenya; at the Desourdy quarry, Mont St. Hilaire, Quebec,
Canada; in the phonolite sill that forms Peck's Mesa, eastern Colfax County, New Mexico and Aris phonolite, Namibia.

Our crystals are from the Aris quarry close to Windhoek, Namibia.