Merrillite-(Ca) Mineral Data

Merrillite-(Ca) Mineral Data
Search Webmineral :
   
Home Crystal jmol jPOWD Chem X Ray Dana Strunz Properties A to Z Images       News Help About



Mineral of the Month Club - An Inexpensive Way to Enjoy Minerals


General Merrillite-(Ca) Information

Help on Chemical Formula: Chemical Formula: (Ca,[ ])19Mg2(PO4)14
Help on Composition: Composition: Molecular Weight = 2,099.61 gm
   Calcium     34.36 %  Ca   48.08 % CaO
   Magnesium    2.32 %  Mg    3.84 % MgO
   Phosphorus  20.65 %  P    47.32 % P2O5
   Oxygen      42.67 %  O
              ______        ______ 
              100.00 %       99.24 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca18Mg2(PO4)14
Help on Environment: Environment: Extraterrestrial bodies.
Help on IMA Status: IMA Status: Not Approved IMA 1977
Help on Locality: Locality: Lunar rocks. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after George Perkins Merrill (1854-1929), meteorite specialist at U. S. National Museum, Smithsonian Institution, Washington, D.C. USA.
 

Search for Merrillite-(Ca) Images

Click Here To Search Images:

Image not yet available on Webmineral.com

Try searching images.google.com or Mindat Picture Gallary for mineral pictures. Caution: The images retrieved may not be appropriate.
  

Merrillite-(Ca) Crystallography
Help on Axial Ratios: Axial Ratios: a:c = 1:3.58096
Help on Cell Dimensions: Cell Dimensions: a = 10.362, c = 37.106, Z = 3; V = 3,450.34 Den(Calc)= 3.03
Help on Crystal System: Crystal System: Trigonal - Ditrigonal PyramidalH-M Symbol (3m) Space Group: R 3c
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.85(1), 2.58(0.6), 3.19(0.6),3.43(0.6), 5.18(0.6), 1.71(0.5), 1.92(0.5), 1.54(0.4),
 

Physical Properties of Merrillite-(Ca)

Help on Habit: Habit: Anhedral Grains - Granular minerals without the expression of crystal shapes
 

Optical Properties of Merrillite-(Ca)

Help on Gladstone-Dale: Gladstone-Dale: CI calc= -0.051 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2051,KC= 0.1952
Ncalc = 1.59
Help on Optical Data: Optical Data: Uniaxial (-), e=1.62, w=1.623, bire=0.0030.
 

Calculated Properties of Merrillite-(Ca)

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.01 gm/cc
note: Specific Gravity of Merrillite-(Ca) =3.03 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0029838637
Boson Index = 0.9970161363
Help on Photoelectric: Photoelectric: PEMerrillite-(Ca) = 5.27 barns/electron
U=PEMerrillite-(Ca) x rElectron Density= 15.85 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Merrillite-(Ca) is Not Radioactive
 

Merrillite-(Ca) Classification
Help on Dana Class: Dana Class: 38.03.04.03 (38)Anhydrous Phosphates, etc
  (38.03)(A+ B++)3 (XO4)2
  (38.03.04)Whitlockite group
 
38.03.04.01 Whitlockite Ca9(Mg,Fe)(PO4)6(PO3OH) R 3c 3m
 
38.03.04.02 Strontiowhitlockite Sr7(Mg,Ca)3(PO4)6[PO3(OH)] R 3c 3m
 
38.03.04.03 Merrillite-(Ca)* (Ca,[])19Mg2(PO4)14 R 3c 3m
 
38.03.04.04 Merrillite Ca18Na2Mg2(PO4)14 R 3c 3m
 
38.03.04.05 Merrillite-(Y)* Ca16Y2Mg2(PO4)14 R 3c 3m
 
38.03.04.06 Ferromerrillite! Ca9NaFe(PO4)7 R 3c 3m
 
38.03.04.07 Tuite! Ca3(PO4)2 R 3m 3m
 
38.03.04.08 Bobdownsite! Ca9Mg(PO3F)(PO4)6 R 3c 3m
Help on Strunz Class: Strunz Class: 08.AC.45 08 - PHOSPHATES, ARSENATES, VANADATES
  08.A - Phosphates, etc. without additional anions, without H2O
  08.AC -With medium-sized and large cations
 
08.AC.45 Merrillite-(Ca)* (Ca,[])19Mg2(PO4)14 R 3c 3m
 
08.AC.45 Merrillite Ca18Na2Mg2(PO4)14 R 3c 3m
 
08.AC.45 Merrillite-(Y)* Ca16Y2Mg2(PO4)14 R 3c 3m
 
08.AC.45 Strontiowhitlockite Sr7(Mg,Ca)3(PO4)6[PO3(OH)] R 3c 3m
 
08.AC.45 Whitlockite Ca9(Mg,Fe)(PO4)6(PO3OH) R 3c 3m
 
08.AC.45 Ferromerrillite! Ca9NaFe(PO4)7 R 3c 3m
 
08.AC.45 Tuite! Ca3(PO4)2 R 3m 3m
 
08.AC.45 Bobdownsite! Ca9Mg(PO3F)(PO4)6 R 3c 3m
 

Other Merrillite-(Ca) Information
Help on References: References: NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Dana8)
Help on See Also: See Also: Links to other databases for Merrillite-(Ca) :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - Google Images
4 - Google Scholar
5 - MinDAT
6 - MinMax(Deutsch)
7 - MinMax(English)
8 - Mineralienatlas (Deutsch)
9 - QUT Mineral Atlas
10 - Ruff.Info

Search for Merrillite-(Ca) using:

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

Visit our Advertisers for Merrillite-(Ca) :

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 Merrillite-(Ca) Mineral Data :

Ask about Merrillite-(Ca) 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 Merrillite-(Ca) Specimen Label here :

Merrillite-(Ca)

(Ca,[ ])19Mg2(PO4)14
Dana No: 38.03.04.03 Strunz No: 08.AC.45
Locality:

 

Notes: