Sanidine Mineral Data + Say SANIDINE

Masons Minerals
[Thumbnails] [Miniatures] [Cabinets] [About Us] [FAQ]
Welcome To Mason's Minerals
Your Source for Beautiful Minerals and Crystals
We offer a no-questioned-asked Satisfaction Guarantee

General Sanidine Information

Help on Chemical  Formula: Chemical Formula: (K,Na)(Si,Al)4O8
Help on Composition: Composition: Molecular Weight = 274.30 gm
   Potassium  10.69 %  K    12.88 % K2O
   Sodium      2.10 %  Na    2.82 % Na2O
   Aluminum    9.84 %  Al   18.59 % Al2O3
   Silicon    30.72 %  Si   65.71 % SiO2
   Oxygen     46.66 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: K0.75Na0.25AlSi3O8
Help on Environment: Environment: Acid volcanic rocks.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1808
Help on Locality: Locality: Common world wide occurrences. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: From the Greek sanis - "little plate" and idos - "to see."
 

Sanidine Image

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

Sanidine

Comments: Blocky, opalescent crystal of sanidine.
Location: Mina La Pili, Carmago, Chihuahua, Mexico. Scale: Crystal size 3x2 cm.
© Dave Barthelmy

Sanidine Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.6588:1:0.5534
Help on Cell Dimensions: Cell Dimensions: a = 8.562, b = 12.996, c = 7.193, Z = 4; beta = 116.016° V = 719.28 Den(Calc)= 2.53
Help on Crystal System: Crystal System: Monoclinic - PrismaticH-M Symbol (2/m) Space Group: C 2/m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.26(1), 3.22(0.9), 3.27(0.75),
Help on Forms: Forms:

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

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

Help on Above

Forms: [ 1 1 0] [ 1 0 1] [ 0 0 1] [ 0 1 0]

Warning: this large pop-up is very compute intensive and may not work well with some computers.

Click Here for Large Sanidine Structure Window Crystal Structure:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate

Keyboard
S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
P - Polyhedra On/Off
B - Bonds On/Off
Help on Above


Phillips M W , Ribbe P H , American Mineralogist , 58 (1973) p.263-270, The structures of monoclinic potassium-rich feldspars

View Additional jPOWD Structure files for Sanidine
[1] [10] [11] [12] [2] [3] [4] [5] [6] [7] [8] [9]
 

Physical Properties of Sanidine

Help on Cleavage: Cleavage: [001] Perfect, [010] Good
Help on Color: Color: Colorless, White, Gray, Yellowish white, Reddish white.
Help on Density: Density: 2.52
Help on Diaphaniety: Diaphaniety: Transparent to translucent
Help on Fracture: Fracture: Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern.
Help on Habit: Habit: Blocky - Crystal shape tends to be equant (e.g. feldspars).
Help on Habit: Habit: Massive - Granular - Common texture observed in granite and other igneous rock.
Help on Habit: Habit: Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).
Help on Hardness: Hardness: 6 - Orthoclase
Help on Luminescence: Luminescence: Non-fluorescent.
Help on Luster: Luster: Vitreous - Pearly
Help on Streak: Streak: white
 

Optical Properties of Sanidine

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.013 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= -0.009 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2076,KPDmeas= 0.2085,KC= 0.2058
Help on Optical Data: Optical Data: Biaxial (-), a=1.518-1.525, b=1.523-1.53, g=1.525-1.531, bire=0.0060-0.0070, 2V(Calc)=48-64, 2V(Meas)=60-0. Dispersion r < v distinct.
Help on Pleochroism (x): Pleochroism (x): colorless.
Help on Pleochroism (y): Pleochroism (y): colorless.
Help on Pleochroism (z): Pleochroism (z): colorless.
 

Calculated Properties of Sanidine

Help on Electron Density: Electron Density:

relectron=2.51 gm/cc
note: rSanidine =2.53 gm/cc.

Help on Fermion Index Fermion Index Fermion Index = 0.01458
Boson Index = 0.98542
Help on Photoelectric: Photoelectric:

PESanidine = 2.57 barns/electron
U=PESanidine x relectron= 6.44 barns/cc.

Help on Radioactivity: Radioactivity:

GRapi = 152.94 (Gamma Ray American Petroleum Institute Units)

Estimated Radioactivity from Sanidine - barely detectable

 

Sanidine Classification

Help on  Dana Class: Dana Class: 76.1.1.2 (76)Tectosilicate Al-Si Framework
  (76.1)with Al-Si frameworks
  (76.1.1)K (Na,Ba) feldspars
 
76.1.1.1 Orthoclase KAlSi3O8 C 2/m 2/m
 
76.1.1.2 Sanidine (K,Na)(Si,Al)4O8 C 2/m 2/m
 
76.1.1.3 Hyalophane (K,Ba)Al(Si,Al)3O8 C 2/m 2/m
 
76.1.1.4 Celsian BaAl2Si2O8 I21/c 2/m
 
76.1.1.5 Microcline KAlSi3O8 C1 1
 
76.1.1.6 Anorthoclase (Na,K)AlSi3O8 C1 1
 
76.1.1.7 Rubicline! (Rb,K)AlSi3O8 P1 1
 
76.1.1.8 Filatovite! K[(Al,Zn)2(As,Si)2O8] I2/c 2/m
Help on  Strunz Class: Strunz Class: VIII/J.06-20 VIII - Silicates
  VIII/J - Tectosilicates (network) without anions unfamiliar to the tetraheders
  VIII/J.06 - Feldspar group, Buddingtonite - Orthoclase - Slawsonite series
 
VIII/J.06-10 Buddingtonite (NH4)AlSi3O8·0.5(H2O) P 21 or P 21/m Mono
 
VIII/J.06-15 Kokchetavite! KAlSi3O8 P 6/mmm(?) 6/m 2/m 2/m
 
VIII/J.06-20 Sanidine (K,Na)(Si,Al)4O8 C 2/m 2/m
 
VIII/J.06-30 Microcline KAlSi3O8 C1 1
 
VIII/J.06-35 Rubicline! (Rb,K)AlSi3O8 P1 1
 
VIII/J.06-40 Orthoclase KAlSi3O8 C 2/m 2/m
 
VIII/J.06-50 Hyalophane (K,Ba)Al(Si,Al)3O8 C 2/m 2/m
 
VIII/J.06-60 Celsian BaAl2Si2O8 I21/c 2/m
 
VIII/J.06-70 Paracelsian BaAl2Si2O8 P 21/c 2/m
 
VIII/J.06-80 Slawsonite (Sr,Ca)Al2Si2O8 P 21/a 2/m
 

Other Sanidine Information

Help on References: References: NAME( Duda&Rejl90) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Heinrich65)
Help on See Also: See Also: Links to other databases for Sanidine :
1 - Alkali-Nuts(English) 2 - Alkali-Nuts(Francais) 3 -Am. Min. Crystal Structure Database 4 - Amethyst Galleries' Mineral Gallery 5 - Applied Mineralogy 6 -Athena 7 - CalTech Mineral Spectroscopy 8 - Crocoite.com Mineral Locations 9 - EUROmin Project 10 -Google Images 11 -Google Scholar 12 -Handbook of Mineralogy (MinSocAm) 13 -Handbook of Mineralogy (UofA) 14 -MinDAT 15 -MinMax(Deutsch) 16 -MinMax(English) 17 - Mineral and Gemstone Kingdom 18 -Mineralienatlas (Deutsch) 19 -Minerals in Thin Sections-Humboldt State 20 - Minerals of Wisconsin 21 -QUT Mineral Atlas 22 - Thin Sections - Brock University 23 - UCLA - Petrography Thin-Sections 24 - University of Manchester - Mineral Structure 25 - WWW-MINCRYST 26 -École des Mines de Paris

Search for Sanidine using:

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

Visit our Advertisers for Sanidine :
AA Mineral Specimens
B and L Minerals
Crystal Vaults
Dan Weinrich Fine Minerals
Dan Weinrich Auctions
e-Rocks Auctions
Excalibur Minerals
Exceptional Minerals
Fabre Minerals
Greenside Minerals
John Betts Fine Minerals
Masons Minerals
Mineral News
Mineral of the Month Club
MineralsWeb Fine Minerals
Rockshop.cz Kalat Fine Minerals
T G Fine Minerals
Wrights Rock Shop

Translate Sanidine Mineral Data :

Ask about Sanidine 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 Sanidine Specimen Label here :

Sanidine

(K,Na)(Si,Al)4O8
Dana No: 76.1.1.2 Strunz No: VIII/J.06-20
Locality:

 

Notes:

 

 
   
 
Go To Webmineral Home Crystallography X-Ray D-Spacing Table Chemical Composition
Dana Classification Strunz Classification Table of Mineral Properties Alphabetical Listing of Minerals
Search Webmineral Photo Gallery of Mineral Images Help Files Links