| |
 |
Ferromerrillite Mineral Data
|
|
|
General Ferromerrillite Information
|
 Chemical Formula: |
Ca9NaFe(PO4)7 |
| Composition: |
Molecular Weight = 1,095.41 gm |
| |
Sodium 1.09 % Na 1.47 % Na2O |
| |
Calcium 33.29 % Ca 46.59 % CaO |
| |
Magnesium 0.44 % Mg 0.74 % MgO |
| |
Manganese 0.35 % Mn 0.45 % MnO |
| |
Iron 4.13 % Fe 5.31 % FeO |
| |
Phosphorus 19.79 % P 45.35 % P2O5 |
| |
Oxygen 40.90 % O |
| |
______ ______ |
| |
100.00 % 99.91 % = TOTAL OXIDE |
| Empirical Formula: |
Ca9.1Na0.52Fe2+0.81Mg0.2Mn2+0.07(PO4)7 |
| Environment: |
Whitlockite group. |
| IMA Status: |
Approved IMA 2006 (Dana # Added) |
| Locality: |
Shergotty meteorite, Gaya, Bihar, India. Link to MinDat.org Location Data. |
| Name Origin: |
Named as the Fe analog of merrillite. |
| Synonym: |
IMA2006-039 |
| |
Merrillite-Fe |
| |
Ferromerrillite Image |
|
Images:
|
|
Ferromerrillite
Comments: Polished section grain mount of ferromerrillite with analysis..
Location: Meteorite Los Angeles, Shergotite, Martian basalt.
Scale: See Image.
© Diederik Visser |
|
Ferromerrillite Crystallography
|
| Axial Ratios: |
a:c = 1:3.58821 |
| Cell Dimensions: |
a = 10.372, c = 37.217, Z = 6; V = 3,467.35 Den(Calc)= 3.15 |
| Crystal System: |
Trigonal - Ditrigonal Pyramidal H-M Symbol (3m) Space Group: R 3c |
| X Ray Diffraction: |
By Intensity(I/Io): 2.86(1), 3.19(0.6), 2.594(0.5),1.917(0.2), 2.747(0.2), 2.99(0.2), 6.42(0.2), 8.13(0.2), |
| |
Physical Properties of Ferromerrillite
|
| Habit: |
Anhedral Grains - Granular minerals without the expression of crystal shapes |
| |
Optical Properties of Ferromerrillite
|
| Optical Data: |
NCalc= 1.62 - from Gladstone-Dale relationship (KC = 0.196) where Ncalc=Dcalc*KC+1
|
| |
Calculated Properties of Ferromerrillite
|
| Electron Density: |
Bulk Density (Electron Density)=3.12 gm/cc
note: Specific Gravity of Ferromerrillite =3.15 gm/cc.
|
| Fermion Index: |
Fermion Index = 0.0019650188
Boson Index = 0.9980349812 |
| Photoelectric: |
PEFerromerrillite = 6.38 barns/electron
U=PEFerromerrillite x rElectron Density= 19.90 barns/cc.
|
| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Ferromerrillite is Not Radioactive |
| |
Ferromerrillite Classification
|
| Dana Class: |
38.03.04.06 (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 |
| 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 Ferromerrillite Information
|
| See Also: |
Links to other databases for Ferromerrillite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info
Search for Ferromerrillite using:
[AOL]
[Bing]
[Dog Pile]
[GeoScienceWorld]
[HotBot]
[Ixquick]
[Lycos]
[MAMMA]
[Scirus]
[Teoma]
[WebCrawler]
[Wikipedia]
[YAHOO]
Visit our Advertisers for Ferromerrillite :
Ask about Ferromerrillite 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 Ferromerrillite Specimen Label here :
|
Ferromerrillite
Ca9NaFe(PO4)7
Dana No: 38.03.04.06 Strunz No: 08.AC.45
Locality:
Notes:
|
|
| |
| |
|
| |
Dakota Matrix
Excalibur Minerals
Exceptional Minerals
Hudson Insitute
John Betts Fine Minerals
Mc Dougall Minerals
Mineral News
Rock and Mineral Shows
Weinrich Minerals, Inc.