Serendibite Mineral Data

Serendibite Mineral Data
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General Serendibite Information

Help on Chemical Formula: Chemical Formula: Ca2(Mg,Al)6(Si,Al,B)6O20
Help on Composition: Composition: Molecular Weight = 706.15 gm
   Calcium    11.35 %  Ca   15.88 % CaO
   Magnesium  15.49 %  Mg   25.68 % MgO
   Aluminum   12.61 %  Al   23.82 % Al2O3
   Silicon    14.32 %  Si   30.63 % SiO2
   Boron       0.92 %  B     2.96 % B2O3
   Oxygen     45.31 %  O
             ______        ______ 
             100.00 %       98.98 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca2Mg4.5Al1.5Si3.6Al1.8B0.6O20
Help on Environment: Environment: In skarns, affected by boron metasomatism, along the contact between carbonate rocks and granite, tonalite, or granulite.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1903
Help on Locality: Locality: Gangapitiya near Ambakotte, Ceylon. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: From the old Arabic name, Serendib, for Sri Lanka (Ceylon).
Help on Name Pronunciation: Name Pronunciation: Serendibite + Pronunciation Say SERENDIBITE
Help on Synonym: Synonym: ICSD 72936
  PDF 29-343
 

Serendibite Image

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

Comments: Blue serendibite, with golden colored phlogopite, in white marble.
Location: Near Johnsberg, Warren County, New York, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Serendibite Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =0.963:1:0.8306
Help on Cell Dimensions: Cell Dimensions: a = 10.043, b = 10.428, c = 8.662, Z = 2; alpha = 106.37°, beta = 96.02°, gamma = 124.4° V = 714.20 Den(Calc)= 3.28
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): 2.53(1), 2.56(0.8), 2.9(0.8),
Click Here for Large Serendibite Structure Window Crystal Structure:

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Van Derveer D G , Swihart G H , Sen Gupta P K , Grew E S , American Mineralogist , 78 (1993) p.195-203, Cation occupancies in serendibite: A crystal structure study, Sample from Johnsburg, New York, Displacement parameters obtained from ICSD

 

Physical Properties of Serendibite

Help on Cleavage: Cleavage: None
Help on Color: Color: Blue, Blue green, Gray blue, Light yellow, Dark blue.
Help on Density: Density: 3.4
Help on Diaphaneity: Diaphaneity: Transparent to translucent
Help on Habit: Habit: Granular - Generally occurs as anhedral to subhedral crystals in matrix.
Help on Habit: Habit: Twinning Common - Crystals are usually twinned.
Help on Hardness: Hardness: 6-7 - Orthoclase-Quartz
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white
 

Optical Properties of Serendibite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.013 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.004 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2033,KPDmeas= 0.2069,KC= 0.2041
Ncalc = 1.69 - 1.71
Help on Optical Data: Optical Data: Biaxial (+), a=1.701, b=1.703, g=1.706, bire=0.0050, 2V(Calc)=80, 2V(Meas)=80. Dispersion strong, r < v.
Help on Pleochroism (x): Pleochroism (x): yellow or green.
Help on Pleochroism (y): Pleochroism (y): yellow or green.
Help on Pleochroism (z): Pleochroism (z): blue or blue.
 

Calculated Properties of Serendibite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.43 gm/cc
note: Specific Gravity of Serendibite =3.46 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.02
Boson Index = 0.98
Help on Photoelectric: Photoelectric: PESerendibite = 2.67 barns/electron
U=PESerendibite x rElectron Density= 9.17 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Serendibite is Not Radioactive
 

Serendibite Classification
Help on Dana Class: Dana Class: 69.02.01a.06 (69)Inosilicate Chains with Side Branches or Loops
  (69.02)with P>2
  (69.02.01a)Aenigmatite and related species (Aenigmatite subgroup)
 
69.02.01a.01 Aenigmatite (Na,Ca)4(Fe,Ti,Mg)12Si12O40 P1 1
 
69.02.01a.02 Dorrite Ca2Mg2Fe4(Al,Fe)4Si2O20 P1,P 1 Tri
 
69.02.01a.03 Hogtuvaite (Ca,Na)2(Fe,Fe,Ti,Mg,Mn)6(Si,Be,Al)6O20 P1 1
 
69.02.01a.04 Krinovite NaMg2CrSi3O10 P1 1
 
69.02.01a.05 Rhonite Ca2(Mg,Fe,Fe,Ti)6(Si,Al)6O20 P1 1
 
69.02.01a.06 Serendibite Ca2(Mg,Al)6(Si,Al,B)6O20 P1 1
 
69.02.01a.07 Welshite Ca4Mg9Sb3O4[Si6Be3AlFe2O36] P1 1
 
69.02.01a.08 Wilkinsonite Na2Fe4Fe2Si6O20 P1 1
 
69.02.01a.09 Makarochkinite! Ca2Fe4FeTiSi4BeAlO20 P1 1
Help on Strunz Class: Strunz Class: 09.DH.45 09 - SILICATES (Germanates)
  09.D - Inosilicates* Structural terminology according to Liebau (1985)
  09.DH -Inosilicates with 4-periodic single chains, Si4O12
 
09.DH.45 Aenigmatite (Na,Ca)4(Fe,Ti,Mg)12Si12O40 P1 1
 
09.DH.45 Dorrite Ca2Mg2Fe4(Al,Fe)4Si2O20 P1,P 1 Tri
 
09.DH.45 Krinovite NaMg2CrSi3O10 P1 1
 
09.DH.45 Rhonite Ca2(Mg,Fe,Fe,Ti)6(Si,Al)6O20 P1 1
 
09.DH.45 Sapphirine (Mg,Al)8(Al,Si)6O20 P1 1
 
09.DH.45 Serendibite Ca2(Mg,Al)6(Si,Al,B)6O20 P1 1
 
09.DH.45 Khmaralite! (Mg,Al,Fe)16(Al,Si,Be)12O40 P 21/c 2/m
 
09.DH.45 Makarochkinite! Ca2Fe4FeTiSi4BeAlO20 P1 1
 
09.DH.45 Welshite Ca4Mg9Sb3O4[Si6Be3AlFe2O36] P1 1
 
09.DH.45 Wilkinsonite Na2Fe4Fe2Si6O20 P1 1
 

Other Serendibite Information
Help on References: References: NAME( AntBidBlaNic2) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Ford32)
Help on See Also: See Also: Links to other databases for Serendibite :
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
15 - WWW-MINCRYST

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

Serendibite

Ca2(Mg,Al)6(Si,Al,B)6O20
Dana No: 69.02.01a.06 Strunz No: 09.DH.45
Locality:

 

Notes: