Pectolite Mineral Data

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


Crystalarium.com
[Minerals] [Gems] [Sale Items] [Gold Rings] [Big Stuff] [Main Page]
Shop early for Holiday Season and get the best stuff.
You can put it on layaway for up to six weeks!


General Pectolite Information

Help on Chemical Formula: Chemical Formula: NaCa2Si3O8(OH)
Help on Composition: Composition: Molecular Weight = 332.40 gm
   Sodium     6.92 %  Na    9.32 % Na2O
   Calcium   24.11 %  Ca   33.74 % CaO
   Silicon   25.35 %  Si   54.23 % SiO2
   Hydrogen   0.30 %  H     2.71 % H2O
   Oxygen    43.32 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: NaCa2(Si3O8)(OH)
Help on Environment: Environment: Secondary mineral in basaltic rocks.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1828
Help on Locality: Locality: Prospect Park quarry, northern New Jersey. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: From the Greek pektos - "compacted" and lithos - "stone."
Help on Name Pronunciation: Name Pronunciation: Pectolite + Pronunciation Say PECTOLITE
Help on Synonym: Synonym: ICSD 34945
  Larimar - blue
  PDF 33-1223
 

Pectolite Image

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

Pectolite   Aegirine

Comments: White, cottony pectolite tufts with acicular aegirine.
Location: 3M quarry, Little Rock, Pulaski County, Arkansas, USA. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals
Click Here for Larger Pectolite Image in a New Browser Window Images:
Click Here for Larger Pectolite Image

Pectolite   Sugilite

Comments: Sharp terminated purple crystals of sugilite to 5mm on white, acicular pectolite.
Location: Wessels Mine, Kalahari, South Africa. Scale: Picture size 1.5 cm.
© John Veevaert

Pectolite Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =1.1349:1:0.9971
Help on Cell Dimensions: Cell Dimensions: a = 7.99, b = 7.04, c = 7.02, Z = 2; alpha = 90.05°, beta = 95°, gamma = 102.467° V = 384.09 Den(Calc)= 2.87
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): 2.901(1), 3.082(0.4), 3.061(0.2),
Click Here for Large Pectolite 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


Ohashi Y , Finger L W , American Mineralogist , 63 (1978) p.274-288, The role of octahedral cations in pyroxenoid crystal chemistry. I. Bustamite,, wollastonite, and the pectolite-schizolite-serandite series, sample SCH, from Kangerdluarsuk, Julianehaab, Greenland

View Additional jPOWD Structure files for Pectolite
[1]
 

Physical Properties of Pectolite

Help on Cleavage: Cleavage: {001} Perfect, {100} Perfect
Help on Color: Color: White, Gray, Light pink, Light green.
Help on Density: Density: 2.86
Help on Diaphaneity: Diaphaneity: Subtranslucent to translucent to opaque
Help on Fracture: Fracture: Splintery - Thin, elongated fractures produced by intersecting good cleavages or partings (e.g. hornblende).
Help on Habit: Habit: Acicular - Occurs as needle-like crystals.
Help on Habit: Habit: Globular - Spherical, or nearly so, rounded forms (e.g. wavellite).
Help on Habit: Habit: Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite)
Help on Hardness: Hardness: 5 - Apatite
Help on Luminescence: Luminescence: Fluorescent and Triboluminescent, Short UV=pink, Long UV=orange-pink.
Help on Luster: Luster: Vitreous - Silky
Help on Streak: Streak: white
 

Optical Properties of Pectolite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.022 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= -0.019 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2145,KPDmeas= 0.2153,KC= 0.2106
Ncalc = 1.6
Help on Optical Data: Optical Data: Biaxial (+), a=1.594-1.61, b=1.603-1.614, g=1.631-1.642, bire=0.0320-0.0370, 2V(Calc)=42-60, 2V(Meas)=50-63. Dispersion very weak, r > v.
Help on Pleochroism (x): Pleochroism (x): colorless.
Help on Pleochroism (y): Pleochroism (y): colorless.
Help on Pleochroism (z): Pleochroism (z): colorless.
 

Calculated Properties of Pectolite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.87 gm/cc
note: Specific Gravity of Pectolite =2.87 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PEPectolite = 4.04 barns/electron
U=PEPectolite x rElectron Density= 11.58 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Pectolite is Not Radioactive
 

Pectolite Classification
Help on Dana Class: Dana Class: 65.02.01.04 (65)Inosilicate Single-Width Unbranched Chains, W=1
  (65.02)with chains P=3
  (65.02.01)Wollastonite group
 
65.02.01.01a Wollastonite-1A CaSiO3 P1 1
 
65.02.01.01b Wollastonite-2M* CaSiO3 P 21 2
 
65.02.01.01c Wollastonite-3A-4A-5A-7A* CaSiO3 P1 1
 
65.02.01.02 Bustamite (Mn,Ca)3Si3O9 P1 1
 
65.02.01.03 Ferrobustamite Ca(Fe,Ca,Mn)Si2O6 P1 1
 
65.02.01.04 Pectolite NaCa2Si3O8(OH) P1 1
 
65.02.01.05 Serandite Na(Mn,Ca)2Si3O8(OH) P1 1
 
65.02.01.06 Cascandite Ca(Sc,Fe)Si3O8(OH) C1 1
 
65.02.01.07 Denisovite (K,Na)Ca2Si3O8(F,OH) Mono
 
65.02.01.08 Tanohataite! LiMn2Si3O8(OH) P1 1
Help on Strunz Class: Strunz Class: 09.DG.05 09 - SILICATES (Germanates)
  09.D - Inosilicates* Structural terminology according to Liebau (1985)
  09.DG -Inosilicates with 3-periodic single and multiple chains
 
09.DG.05 Bustamite (Mn,Ca)3Si3O9 P1 1
 
09.DG.05 Ferrobustamite Ca(Fe,Ca,Mn)Si2O6 P1 1
 
09.DG.05 Pectolite NaCa2Si3O8(OH) P1 1
 
09.DG.05 Wollastonite-3A-4A-5A-7A* CaSiO3 P1 1
 
09.DG.05 Wollastonite-1A CaSiO3 P1 1
 
09.DG.05 Wollastonite-2M* CaSiO3 P 21 2
 
09.DG.05 Serandite Na(Mn,Ca)2Si3O8(OH) P1 1
 

Other Pectolite Information
Help on References: References: NAME( Sinkankas66) PHYS. PROP.(www.saint-hilaire.ca) OPTIC PROP.(Heinrich65)
Help on See Also: See Also: Links to other databases for Pectolite :
1 - Alkali-Nuts(English)
2 - Alkali-Nuts(Francais)
3 - Am. Min. Crystal Structure Database
4 - Amethyst Galleries' Mineral Gallery
5 - Athena
6 - EUROmin Project
7 - Ecole des Mines de Paris
8 - Franklin Minerals(Dunn)
9 - Franklin Minerals(Palache)
10 - Glendale Community College
11 - Google Images
12 - Google Scholar
13 - Handbook of Mineralogy (MinSocAm)
14 - Handbook of Mineralogy (UofA)
15 - MinDAT
16 - MinMax(Deutsch)
17 - MinMax(English)
18 - Mineral and Gemstone Kingdom
19 - Mineralienatlas (Deutsch)
20 - QUT Mineral Atlas
21 - Ruff.Info
22 - Tradeshop.com - The Rainbow of Gems
23 - WWW-MINCRYST

Search for Pectolite using:

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

Visit our Advertisers for Pectolite :

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 Pectolite Mineral Data :

Ask about Pectolite 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 Pectolite Specimen Label here :

Pectolite

NaCa2Si3O8(OH)
Dana No: 65.02.01.04 Strunz No: 09.DG.05
Locality:

 

Notes: