Hydroastrophyllite Mineral Data

Hydroastrophyllite Mineral Data
Search Webmineral :
   
Home Crystal jmol jPOWD Chem X Ray Dana Strunz Properties A to Z Images       News Help About



[On-Line Catalogue] [On-Line Auctions] [eBay] [Contact Us] [Policies]
We specialize in fine European and Asian Mineral Specimens
Heliodor is based in Prague, Czech Republic


General Hydroastrophyllite Information

Help on Chemical Formula: Chemical Formula: (H3O,K)2Ca(Fe+++,Mn)5-6Ti2Si8O26(OH)4F
Help on Composition: Composition: Molecular Weight = 1,213.30 gm
   Potassium   1.61 %  K     1.94 % K2O
   Calcium     3.30 %  Ca    4.62 % CaO
   Titanium    5.52 %  Ti    9.22 % TiO2
   Manganese   8.15 %  Mn    7.60 % MnO /  3.25 % Mn2O3
   Niobium     3.06 %  Nb    4.38 % Nb2O5
   Aluminum    2.22 %  Al    4.20 % Al2O3
   Iron       16.11 %  Fe   23.03 % Fe2O3
   Silicon    16.20 %  Si   34.66 % SiO2
   Hydrogen    0.71 %  H     6.31 % H2O
   Oxygen     41.54 %  O
   Fluorine    1.57 %  F     1.57 % F
                -   %   F    -0.66 % -O=F2    
             ______        ______ 
             100.00 %      100.13 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: (H3O)1.5K0.5CaFe3+3.5Mn2+1.3Mn3+0.5Ti1.4Nb0.4Si7AlO26(OH)4F
Help on Environment: Environment: Weathering product in an alkalic pegmatite.
Help on IMA Status: IMA Status: Approved IMA 1974
Help on Locality: Locality: Undefined locality in Sichuan Province, China. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for its high water content and relationship to astrophyllite.
 

Hydroastrophyllite Image

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

Hydroastrophyllite

Comments: Spray of brown hydroastrophyllite in alkaline granite pegmatite matrix.
Location: Western Keivy Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia. Scale: Picture Size 12x9 mm.
© Pavel M. Kartashov

Hydroastrophyllite Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =0.9899:1:0.4524
Help on Cell Dimensions: Cell Dimensions: a = 11.86, b = 11.98, c = 5.42, Z = 1; alpha = 103.42°, beta = 95.15°, gamma = 112.2° V = 690.73 Den(Calc)= 2.92
Help on Crystal System: Crystal System: Triclinic - PinacoidalH-M Symbol ( 1) Space Group: P1
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.51(1), 10.55(0.9), 2.643(0.8),
 

Physical Properties of Hydroastrophyllite

Help on Cleavage: Cleavage: {???} Good, {???} Good
Help on Color: Color: Dark brown.
Help on Density: Density: 3.15
Help on Diaphaneity: Diaphaneity: Translucent to Opaque
Help on Habit: Habit: Aggregates - Made of numerous individual crystals or clusters.
Help on Habit: Habit: Blocky - Crystal shape tends to be equant (e.g. feldspars).
Help on Hardness: Hardness: 3-4 - Calcite-Fluorite
Help on Luster: Luster: Vitreous - Adamantine
Help on Streak: Streak: yellow white
 

Optical Properties of Hydroastrophyllite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.148 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= 0.093 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2374,KPDmeas= 0.2231,KC= 0.2618
Ncalc = 1.77 - 1.82
Help on Optical Data: Optical Data: Biaxial (-), a=1.66, b=1.72, g=1.728, bire=0.0680, 2V(Calc)=38, 2V(Meas)=40.
Help on Pleochroism (x): Pleochroism (x): bright yellow.
Help on Pleochroism (y): Pleochroism (y): orange yellow.
Help on Pleochroism (z): Pleochroism (z): dull yellow.
 

Calculated Properties of Hydroastrophyllite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.89 gm/cc
note: Specific Gravity of Hydroastrophyllite =2.96 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PEHydroastrophyllite = 13.49 barns/electron
U=PEHydroastrophyllite x relectron= 39.03 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 22.72 (Gamma Ray American Petroleum Institute Units)
Concentration of Hydroastrophyllite per GRapi unit = 4.40 (%)

Estimated Radioactivity from Hydroastrophyllite - barely detectable

 

Hydroastrophyllite Classification
Help on Dana Class: Dana Class: 69.01.01.06 (69)Inosilicate Chains with Side Branches or Loops
  (69.01)with (P=2, and N=4, 2 branches)
  (69.01.01)Astrophyllite group
 
69.01.01.01 Astrophyllite K2Na(Fe,Mn)7Ti2Si8O26(OH)4 P1 1
 
69.01.01.02 Kupletskite K2Na(Mn,Fe)7(Ti,Nb)2Si8O26(OH)4F C 2/c 2/m
 
69.01.01.03 Kupletskite-(Cs) (Cs,K)2Na(Mn,Fe,Li)7(Ti,Nb)2Si8O26(OH)4F P1 1
 
69.01.01.04 Niobophyllite K2Na(Fe,Mn)7(Nb,Ti)2Si8O26(OH)4(F,O) P1,P 1 Tri
 
69.01.01.05 Zircophyllite K2(Na,Ca)(Mn,Fe)7(Zr,Nb)2Si8O26(OH)4F P1 1
 
69.01.01.06 Hydroastrophyllite (H3O,K)2Ca(Fe,Mn)5-6Ti2Si8O26(OH)4F P1 1
 
69.01.01.07 Magnesioastrophyllite K2Na[Na(Fe,Fe,Mn)Mg2]Ti2Si8O26(OH)4F A2/m 2/m
 
69.01.01.08 Niobokupletskite! K2Na(Mn,Zn,Fe)7(Nb,Zr,Ti)2Si8O26(OH)4(O,F) P1 1
 
69.01.01.09 Nalivkinite! Li2NaFe7Ti2Si8O24(OH)4F P1 1
Help on Strunz Class: Strunz Class: 09.DC.05 09 - SILICATES (Germanates)
  09.D - Inosilicates* Structural terminology according to Liebau (1985)
  09.DC -Inosilicates with branched 2-periodic single chains Si2O6 + 2SiO3 ® Si4O12
 
09.DC.05 Astrophyllite K2Na(Fe,Mn)7Ti2Si8O26(OH)4 P1 1
 
09.DC.05 Kupletskite-(Cs) (Cs,K)2Na(Mn,Fe,Li)7(Ti,Nb)2Si8O26(OH)4F P1 1
 
09.DC.05 Kupletskite K2Na(Mn,Fe)7(Ti,Nb)2Si8O26(OH)4F C 2/c 2/m
 
09.DC.05 Magnesioastrophyllite K2Na[Na(Fe,Fe,Mn)Mg2]Ti2Si8O26(OH)4F A2/m 2/m
 
09.DC.05 Hydroastrophyllite (H3O,K)2Ca(Fe,Mn)5-6Ti2Si8O26(OH)4F P1 1
 
09.DC.05 Niobophyllite K2Na(Fe,Mn)7(Nb,Ti)2Si8O26(OH)4(F,O) P1,P 1 Tri
 
09.DC.05 Nalivkinite! Li2NaFe7Ti2Si8O24(OH)4F P1 1
 
09.DC.05 Zircophyllite K2(Na,Ca)(Mn,Fe)7(Zr,Nb)2Si8O26(OH)4F P1 1
 
09.DC.05 Niobokupletskite! K2Na(Mn,Zn,Fe)7(Nb,Zr,Ti)2Si8O26(OH)4(O,F) P1 1
 

Other Hydroastrophyllite Information
Help on References: References: NAME( AntBidBlaNic2) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic2)
Help on See Also: See Also: Links to other databases for Hydroastrophyllite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - Google Images
6 - Google Scholar
7 - Handbook of Mineralogy (MinSocAm)
8 - Handbook of Mineralogy (UofA)
9 - MinDAT
10 - MinMax(Deutsch)
11 - MinMax(English)
12 - Mineralienatlas (Deutsch)
13 - QUT Mineral Atlas
14 - Ruff.Info

Search for Hydroastrophyllite using:

Google
 
Web webmineral.com
[ALTAVISTA] [AOL] [All-The-Web] [HotBot] [Ixquick] [MAMMA] [MSN.COM] [Netscape] [Scirus] [Teoma] [Wikipedia] [YAHOO]

Visit our Advertisers for Hydroastrophyllite :

AA Mineral Specimens

B & L Fine Minerals

Crystalarium.com

Dan Weinrich Fine Minerals

Dan Weinrich Auctions

Dakota Matrix

Desert Winds Gems and Minerals

Excalibur Minerals

Exceptional Minerals

Fabre Minerals

Heliodor

John Betts Fine Minerals

Mason's Minerals

Mineral News

Mineral of the Month Club

Wrights Rock Shop

Translate Hydroastrophyllite Mineral Data :

Ask about Hydroastrophyllite 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 Español

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

Hydroastrophyllite

(H3O,K)2Ca(Fe+++,Mn)5-6Ti2Si8O26(OH)4F
Dana No: 69.01.01.06 Strunz No: 09.DC.05
Locality:

 

Notes: