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Sincosite Mineral Data

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General Sincosite Information

Help on Chemical  Formula: Chemical Formula: Ca(V++++O)2(PO4)2•5(H2O)
Help on Composition: Composition: Molecular Weight = 453.98 gm
   Calcium      8.83 %  Ca   12.35 % CaO
   Vanadium    22.44 %  V    40.06 % V2O5
   Phosphorus  13.65 %  P    31.27 % P2O5
   Hydrogen     2.22 %  H    19.84 % H2O
   Oxygen      52.86 %  O
              ______        ______ 
              100.00 %      103.52 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: CaV5+2O2(PO4)2•5(H2O)
Help on Environment: Environment: Black, carbonaceous shale.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1924
Help on Locality: Locality: Sincos, Dept. Junin, Peru, about 160 km E of Lima. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the locality.
Help on Name Pronunciation: Name Pronunciation: Sincosite + Pronunciation Say SINCOSITE
Help on Synonym: Synonym: ICSD 67660
  PDF 39-318

Sincosite Image

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  Minyulite   Sincosite

Comments: Pale greenish white acicular radial sprays of minyulite to 8mm with small, green, tabular sincosite.
Location: Ross Hannibal mine, Lawrence County, South Dakota. Scale: Picture size 2 cm.
© Tom Loomis / Dakota Matrix

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Comments: Tabular single crystals of sincosite to 2 mm on drusy quartz.
Location: Ross Hannibal Mine, Lawrence Co., South Dakota, USA. Scale: Picture size 1.5 cm.
© Tom Loomis / Dakota Matrix

Sincosite Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:1.4308
Help on Cell Dimensions: Cell Dimensions: a = 8.895, c = 12.727, Z = 4; V = 1,006.97 Den(Calc)= 2.99
Help on Crystal System: Crystal System: Tetragonal Space Group: P mmm or P 4/nmm
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 6.28(1), 3.14(0.6), 3.35(0.2),
Help on Forms: Forms:

Dbl Clk - Start-Stop Rotation
RMB - Cycle Display Modes
Drag1 - Manipulate Crystal
Drag2 - Resize

S - Stereo
I - Indicies
<space> - Start-Stop Rotation
F - Fit to Screen
M - Menu

Help on Above

Forms: ( 1 0 0) ( 0 0 1)

Warning: this java applet does not work in some browsers because of security restrictions.


Physical Properties of Sincosite

Help on Cleavage: Cleavage: {001} Perfect, {100} Distinct, {110} Poor
Help on Color: Color: Green, Yellowish green, Olive green, Brownish green.
Help on Density: Density: 2.97
Help on Fracture: Fracture: Brittle - Generally displayed by glasses and most non-metallic minerals.
Help on Habit: Habit: Aggregates - Made of numerous individual crystals or clusters.
Help on Habit: Habit: Platy - Sheet forms (e.g. micas).
Help on Habit: Habit: Scaly - Morphology like fish scales.
Help on Hardness: Hardness: 1-2 - Between Talc and Gypsum
Help on Luster: Luster: Vitreous - Metallic
Help on Streak: Streak: light green

Optical Properties of Sincosite

Help on Dichroism (e): Dichroism (e): colorless or pale yellow.
Help on Dichroism (w): Dichroism (w): grayish green or grayish green.
Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.216 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= 0.222 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2232,KPDmeas= 0.2247,KC= 0.2868
Ncalc = 1.85 - 1.86
Help on Optical Data: Optical Data: Uniaxial (-), e=1.655, w=1.68, bire=0.0250.

Calculated Properties of Sincosite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.96 gm/cc
note: Specific Gravity of Sincosite =2.97 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0009373131
Boson Index = 0.9990626869
Help on Photoelectric: Photoelectric: PESincosite = 5.94 barns/electron
U=PESincosite x rElectron Density= 17.55 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Sincosite is Not Radioactive

Sincosite Classification

Help on  Dana Class: Dana Class: (42)Hydrated Phosphates, etc., Containing Hydroxyl or Halogen
  (42.11)where (AB)4 (XO4)3 Zq � x(H2O)
  (42.11.19)Sincosite Group Sincosite Ca(VO)2(PO4)2•5(H2O) P mmm or P 4/nmm Tetra Bariosincosite! Ba(VO)2(PO4)2•4(H2O) P 4/n or P 4/nmm 4/m Phosphovanadylite! (Ba,Ca,K,Na)x[(V,Al)4P2(O,OH)16]•12(H2O)x~0.66 I 43m 4 3m
Help on  Strunz Class: Strunz Class: 08.CJ.65 08 - PHOSPHATES, ARSENATES, VANADATES
  08.C - Phosphates without Additional Anions, with H2O
  08.CJ -With only large cations
08.CJ.65 Sincosite Ca(VO)2(PO4)2•5(H2O) P mmm or P 4/nmm Tetra
08.CJ.65 Bariosincosite! Ba(VO)2(PO4)2•4(H2O) P 4/n or P 4/nmm 4/m

Other Sincosite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Dana8)
Help on See Also: See Also: Links to other databases for Sincosite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info

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Dana No: Strunz No: 08.CJ.65





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