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| Chemistry:
(K,Ba)(Na,Sr)Ca2(Si,Ti)4O11(F,OH)·H2O
[Hydrated Potassium Barium Sodium Calcium
Titanium Silicate Fluoride Hydroxide] | Discovered
in 1922;
IMA
status: Valid (pre-IMA; Grandfathered). Yuksporite
is named after its discovery locality, Mount Yukspor, Khibina alkaline complex, Kola Peninsula, Russia. |
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Classification
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Mineral
Classification: |
Silicates |
Strunz 8th
Ed. ID:
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8/F.35-40
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Nickel-Strunz 10th
Ed. ID:
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9.DG.95 |
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9 : SILICATES (Germanates) D : Inosilicates G : Inosilicates with 3-periodic single and multiple chains
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Related
to: |
Umbite
Group. Ashcroftine-(Y) Series.
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Crystal
Data
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Crystallography:
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Monoclinic
- Prismatic
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Crystal
Habit:
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Fibrous,
scaly, or lamellar; in irregular aggregates, to 10 cm.
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Twinning:
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None
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Physical
Properties
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Cleavage: |
[???]
Perfect
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Fracture: |
Irregular/Uneven,
Fibrous, Granular
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Tenacity:
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Brittle
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Hardness
(Mohs): |
5.0
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Density:
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3.05 (g/cm3)
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Luminescence:
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None |
Radioactivity:
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Barely
Detectable;
GRapi = 86.57 (Gamma Ray American Petroleum Institute Units)
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Optical
Properties
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Color: |
Brownish
Pink to Red
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Transparency: |
Semitransparent |
Luster: |
Vitreous,
Silky |
Refractive
Index: |
1.644
- 1.660
Biaxial ( + )
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Birefringence: |
0.0160
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Dispersion: |
Strong |
Pleochroism: |
Relatively Strong;
X
= pale rose-yellow; Y
= Z
= rose-yellow |
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Occurances
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Geological
Setting: |
In
veins in nepheline syenite in a differentiated alkalic
massif (Khibiny massif, Russia). |
Common
Associations: |
Aegirine,
Astrophyllite, Biotite, Pectolite, Titanite (Khibiny
massif, Russia); Aegirine, Barium Lamprophyllite, Kalsilite,
Potassic Feldspar, Lamprophyllite, Tausonite, Titanite,
Wadeite (Murun massif, Russia) |
Common
Impurities: |
Al,
Fe, Mn, Mg, Sr, Cl |
Type
Locality: |
Hackman Valley, Yukspor Mt, Khibiny Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia |
Year
Discovered: |
1922
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View
mineral photos: |
Yuksporite
Mineral Photos and Locations |
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More
Information
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Mindat.org Webmineral.com |
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Yuksporite
is a rare silicate mineral that only comes from one
place on earth: near Yukspor Mt, Khibiny Massif, Kola Peninsula, Northern Region, Russia.
It is also one of the few silicate gem minerals that
contains Titanium. The others are Astrophyllite,
Benitoite,
Neptunite and
Sphene (Titanite).
There are also a few oxide gem minerals that contain
Titanium: Anatase,
Brookite and
Rutile.
Yuksporite is typically found as fine-fibrous agregate
material and never as distinct crystals and so is a
cabochon type gem. Its brownish-pink to red colors and
chatoyance make for an attractive and unusual gem.
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Yuksporite
gems for sale:
We
have not photographed our Yuksporite gems. Please
check back soon.
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