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Scheuchzerite
Current inventory:  0 gems
 

Scheuchzerite

  
Scheuchzerite was named for the Swiss naturalist Johann Jakob Scheuchzer (1672-1733), junior physician of the city of Zürich, curator of the Kunstkammer - a cabinet of natural history and curiosities. He held the chair of physics and mathematics, University of Zürich.

Discovered in 2004; IMA status: Valid (IMA Approved 2004)

 

Chemistry

 

 

Chemical Formula:

Na(Mn,Mg,Zn)9[VSi9O28(OH)](OH)3

 

Hydroxy Sodium Manganese Magnesium Zinc Silicate Vanadate (hydroxyvanadosilicate)

Emperical Chemical Formula:

Na0.97(Mn7.79Mg0.95Zn0.16Ni0.04Ca0.03Al0.01)∑=8.98(V0.95As0.02Si9.08)∑=10.05O32.05H4

Molecular Weight:

1,309.36 gm

Composition:

Sodium

1.70 %

Na

2.30 %

Na2O

 

Calcium

0.09 %

Ca

0.13 %

CaO

 

Magnesium

1.76 %

Mg

2.92 %

MgO

 

Manganese

32.69 %

Mn

42.20 %

MnO

 

Aluminum

0.02 %

Al

0.04 %

Al2O3

 

Vanadium

3.70 %

V

6.60 %

V2O5

 

Zinc

0.80 %

Zn

0.99 %

ZnO

 

Silicon

19.48 %

Si

41.67 %

SiO2

 

Nickel

0.18 %

Ni

0.23 %

NiO

 

Arsenic

0.11 %

As

0.18 %

As2O5

 

Hydrogen

0.31 %

H

2.75 %

H2O

 

Oxygen

39.16 %

O

 

 

 

 

100.00 %

 

100.01 %

= TOTAL OXIDE

 

 

Classification

   

   

Mineral Classification:

SILICATES (Germanates)

Nickel-Strunz 10th Ed. ID:

9.DM.35

 

9 : SILICATES (Germanates)
D : Inosilicates
M : Inosilicates with 6-periodic single chains

Related to:

Saneroite (both minerals are chain silicates)

Varieties:

None

Synonyms:

IMA2004-044

 

 

Crystal Data

   

   

Crystallography:

Triclinic - Pinacoidal

Crystal Habit:

Forms yellow-orange, transparent, radiating acicular prismatic crystals up to 0.8 mm 

Twinning:

None

 

 

Physical Properties

   

 

Cleavage:

Distinct/good parallel to [111] (parallel to fiber elongation)

Fracture:

n/a

Tenacity:

Brittle

Moh's Hardness:

2.5

Density:

3.50 (g/cm3)

Luminescence:

None

Radioactivity:

Not Radioactive

 

 

Optical Properties

   

   

Color:

Yellow-orange

Transparency:

Transparent

Luster:

Vitreous

Refractive Index:

1.740 - 1.750  Biaxial ( + )

Birefringence:

n/a

Dispersion:

n/a

Pleochroism:

Weak; x = brown yellow, y = pale yellow

 

 

Occurances

   

   

Geological Setting:

Manganese-bearing veins resulting from the remobilization of ore components during retrograde Tertiary Alpine metamorphism.

Common Associations:

Saneroite, Tiragalloite

Common Impurities:

n/a

Type Locality:

Fianel Mine, Ausserferrera, Ferrera Valley, Hinterrhein Valley, Grischun (Grisons; Graubünden), Switzerland

Year Discovered:

2004

View mineral photos:

Scheuchzerite Mineral Photos and Locations

 

 

More Information

   

   

 

Mindat.org
Webmineral.com

 

 


Scheuchzerite is a recently discovered hydroxyvanadosilicate mineral that was found at the Fianel Mine, Ausserferrera, Ferrera Valley, Hinterrhein Valley, Grischun, Switzerland in 2004. It forms yellow-orange, transparent, radiating, acicular crystals up to 0.8 mm in matrix. Scheuchzerite was named for the Swiss naturalist Johann Jakob Scheuchzer (1672-1733), junior physician of the city of Zürich, curator of the Kunstkammer - a cabinet of natural history and curiosities. He held the chair of physics and mathematics, University of Zürich. He did much work on Swiss geology and mineralogy that was essential for his time. Scheuchzerite mineral specimens and gems are rare.

Locations for finding Scheuchzerite: the type locality (TL) Fianel Mine, Ausserferrera, Ferrera Valley, Hinterrhein Valley, Grischun (Grisons; Graubünden), Switzerland; Valgraveglia Mine (Gambatesa Mine), Reppia, Graveglia Valley, Ne, Genova Province, Liguria, Italy.
 

  
Scheuchzerite gems for sale:

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