Mineralogy Database

Hectorfloresite Mineral Data

Search Webmineral :

General Hectorfloresite Information

Help on Chemical  Formula: Chemical Formula: Na9(IO3)(SO4)4
Help on Composition: Composition: Molecular Weight = 766.06 gm
   Sodium  27.01 %  Na   36.41 % Na2O
   Sulfur  16.74 %  S    41.81 % SO3
   Iodine  16.57 %  I    21.79 % I2O5
   Oxygen  39.68 %  O
          ______        ______ 
          100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Na9(IO3)(SO4)4
Help on IMA Status: IMA Status: Approved IMA 1989
Help on Locality: Locality: Alianza nitrate mine, Oficina Victoria, Tarapaca, Chile. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Hector Flores W. (1906-1984), Chilean geologist, University of Chile.
Help on Name Pronunciation: Name Pronunciation: Hectorfloresite + Pronunciation Say HECTORFLORESITE

Hectorfloresite Image

Click Here for Larger   Image in a New Browser Window Images:
Click Here for Larger   Image


Comments: Prismatic twinned crystal of hectorfloresite.
Location: Pampa Rica, Antofagasta, Chile. Scale: Picture size 2 mm.
© Thomas Witzke / Abraxas-Verlag

Hectorfloresite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =2.707:1:2.053
Help on Cell Dimensions: Cell Dimensions: a = 18.775, b = 6.9356, c = 14.239, Z = 4; beta = 108.91° V = 1,754.07 Den(Calc)= 2.90
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: P 21/a
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.88(1), 2.7(0.8), 2.788(0.3),

Physical Properties of Hectorfloresite

Help on Cleavage: Cleavage: None
Help on Color: Color: Colorless, White.
Help on Density: Density: 2.8 - 2.85, Average = 2.82
Help on Diaphaneity: Diaphaneity: Transparent
Help on Fracture: Fracture: Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz).
Help on Habit: Habit: Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).
Help on Habit: Habit: Pseudo Hexagonal - Crystals show a hexagonal outline.
Help on Hardness: Hardness: 2 - Gypsum
Help on Streak: Streak: white

Optical Properties of Hectorfloresite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.023 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.048 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1767,KPDmeas= 0.1814,KC= 0.1857
Ncalc = 1.52 - 1.54
Help on Optical Data: Optical Data: Biaxial (-), a=1.493, b=1.521, g=1.523, bire=0.0300, 2V(Calc)=28, 2V(Meas)=26.

Calculated Properties of Hectorfloresite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.71 gm/cc
note: Specific Gravity of Hectorfloresite =2.83 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0014462148
Boson Index = 0.9985537852
Help on Photoelectric: Photoelectric: PEHectorfloresite = 59.55 barns/electron
U=PEHectorfloresite x rElectron Density= 161.62 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Hectorfloresite is Not Radioactive

Hectorfloresite Classification

Help on  Dana Class: Dana Class: (32)Compound Sulfates
  (32.01)(anhydrous) with simple bi-anionic formula
  (32.01.02)Dana Group Hectorfloresite Na9(IO3)(SO4)4 P 21/a 2/m
Help on  Strunz Class: Strunz Class: 07.BD.60 07 - SULFATES (SELENATES, TELLURATES)
  07.B - Sulfates (selenates, etc.) with Additional Anions, without H2O
  07.BD -With only large cations
07.BD.60 Hectorfloresite Na9(IO3)(SO4)4 P 21/a 2/m

Other Hectorfloresite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Am.Min.,Vol.74,p1207-1214,1989) OPTIC PROP.(Am.Min.,Vol.74,p1207-1214,1989)
Help on See Also: See Also: Links to other databases for Hectorfloresite :
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

Search for Hectorfloresite using:

Web webmineral.com
[AOL] [Bing] [Dog Pile] [GeoScienceWorld] [HotBot] [Ixquick] [Lycos] [MAMMA] [Scirus] [Teoma] [WebCrawler] [Wikipedia] [YAHOO]

Visit our Advertisers for Hectorfloresite :

Ask about Hectorfloresite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Espaņol

Print or Cut-and-Paste your Hectorfloresite Specimen Label here :


Dana No: Strunz No: 07.BD.60





Dakota Matrix
Excalibur Minerals
Exceptional Minerals
Hudson Insitute
John Betts Fine Minerals
Mc Dougall Minerals
Mineral News
Rock and Mineral Shows
Weinrich Minerals, Inc.