Gramaccioliite-(Y) Mineral Data (original) (raw)

General Gramaccioliite-(Y) Information

Help on Chemical Formula: Chemical Formula:

(Pb,Sr)(Y,Mn)Fe2(Ti,Fe)18O38

Help on Composition: Composition:

Molecular Weight = 1,822.46 gm

Barium 0.15 % Ba 0.17 % BaO

Strontium 1.30 % Sr 1.54 % SrO

Calcium 0.09 % Ca 0.12 % CaO

Lanthanum 0.15 % La 0.18 % La2O3

Cerium 0.62 % Ce 0.72 % Ce2O3

Yttrium 2.39 % Y 3.04 % Y2O3

Uranium 0.26 % U 0.29 % U2O3

Titanium 35.55 % Ti 59.30 % TiO2

Manganese 1.12 % Mn 1.44 % MnO

Niobium 0.20 % Nb 0.29 % Nb2O5

Vanadium 0.11 % V 0.20 % V2O5

Zinc 0.79 % Zn 0.98 % ZnO

Iron 16.82 % Fe 21.64 % FeO

Lead 6.94 % Pb 7.47 % PbO

Neodymium 0.16 % Nd 0.18 % Nd2O3

Oxygen 33.36 % O

______ ______

100.00 % 97.56 % = TOTAL OXIDE

Help on Empirical Formula: Empirical Formula:

Pb0.61Sr0.27Ba0.02U0.02Y0.49Mn2+0.37Ce0.08Ca0.04Nd0.02La0.02Ti13.53Fe2+5.49Zn0.22V5+0.04Nb0.04O38

Help on Environment: Environment:

Hydrothermal quartz veins in a biotitic gneiss. (crichtonite group; structure)

Help on IMA Status: IMA Status:

Approved IMA 2003 (Dana # Added)

Help on Locality: Locality:

Sambuco, Stura Valley, Piedmont, Italy. Link to MinDat.org Location Data.

Help on Name Origin: Name Origin:

Named for Prof. Carlo M. Gramaccioli (1935-) of the University of Milano, Italy.

Help on Synonym: Synonym:

Davidite-(Y)

IMA2001-034

Gramaccioliite-(Y) Image

Click Here for Larger Gramaccioliite-(Y) Image in a New Browser Window Images:

Click Here for Larger Gramaccioliite-(Y) Image Gramaccioliite-(Y) Comments: Black, metallic rystals of gramaccioliite-(Y) in matrix. Location: Sambuco, Pianche di Vinazio, Piemont, Italy.Scale: Picture size 1.3 mm.. © Thomas Witzke

Gramaccioliite-(Y) Crystallography

Help on Axial Ratios: Axial Ratios:

a:c = 1:2.01421

Help on Cell Dimensions: Cell Dimensions:

a = 10.411, c = 20.97, Z = 3; V = 1,968.40 Den(Calc)= 4.61

Help on Crystal System: Crystal System:

Trigonal - RhombohedralH-M Symbol ( 3) Space Group: R 3

Help on X Ray Diffraction: X Ray Diffraction:

By Intensity(I/Io): 3.002(1)(300), 1.606(0.95)(3.1.10), 2.258(0.7)(134),2.892(0.7)(116), 1.809(0.6)(318), 2.147(0.5), 2.852(0.5),

Click Here for Large Gramaccioliite-(Y) 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

| | Orlandi P , Pasero M , Rotiroti N , Olmi F , Demartin F , Moelo Y , European Journal of Mineralogy , 16 (2004) p.171-175, Gramaccioliite-(Y), a new mineral of the crichtonite group from Stura Valley, Piedmont, Italy, Locality: the gneiss of the Hercynian Massif of Argentera at Sambuco, Italy | | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |

Physical Properties of Gramaccioliite-(Y)

Help on Cleavage: Cleavage:

None

Help on Color: Color:

Black.

Help on Diaphaneity: Diaphaneity:

Opaque

Help on Fracture: Fracture:

Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments.

Help on Habit: Habit:

Hexagonal - Six-sided crystal shape in cross-section or habit.

Help on Habit: Habit:

Tabular - Form dimensions are thin in one direction.

Help on Luster: Luster:

Metallic

Help on Streak: Streak:

black

Optical Properties of Gramaccioliite-(Y)

Help on Optical Data: Optical Data:

NCalc= 2.38 - from Gladstone-Dale relationship (KC = 0.2989) where Ncalc=Dcalc*KC+1

Help on RL Anisotrophism: RL Anisotrophism:

Weak.

Help on Reflectivity Reflectivity

Standardized Intensity (100%) Reflection Spectra of Gramaccioliite-(Y) in Air

λ R ∑ R(λ)
470 nm 19.20
546 nm 17.90
589 nm 17.60
650 nm 17.40

Standardized Intensity (100%) Reflection Spectra of Gramaccioliite-(Y) in Oil

λ R ∑ R(λ)
470 nm 6.70
546 nm 5.90
589 nm 5.70
650 nm 5.80

Calculated Relative Intensity Colors of Gramaccioliite-(Y) in Air

RelativeIntensity 0% 50% 100% 150% 200% 250% 300% 350% 400% 450% 500%
R

Calculated Relative Intensity Colors of Gramaccioliite-(Y) in Oil

RelativeIntensity 0% 100% 200% 300% 400% 500% 600% 700% 800% 900% 1000%
R

Calculated Properties of Gramaccioliite-(Y)

Help on Electron Density: Electron Density:

Bulk Density (Electron Density)=4.32 gm/cc
note: Specific Gravity of Gramaccioliite-(Y) =4.61 gm/cc.

Help on Fermion Index: Fermion Index:

Fermion Index = 0.06
Boson Index = 0.94

Help on Photoelectric: Photoelectric:

PEGramaccioliite-(Y) = 142.11 barns/electron
U=PEGramaccioliite-(Y) x relectron= 613.22 barns/cc.

Help on Radioactivity: Radioactivity:

GRapi = 21,765.77 (Gamma Ray American Petroleum Institute Units)
Concentration of Gramaccioliite-(Y) per GRapi unit = 45.94 (PPM)

Gramaccioliite-(Y) is Radioactive as defined in 49 CFR 173.403. Greater than 70 Bq / gram.

Estimated Radioactivity from Gramaccioliite-(Y) - weak

SpecimenSizeWeight/Volume(Sphere) * CalculatedActivityBecquerels(Bq) CalculatedActivityCuries (Ci) EstimatedActivityGR(api) EstimatedExposure(mRem**)/hrIf Held in HandFor One Hour
1000 gm / 7.45 cm 488,317 1.32E-05 21,765.77 7.16
100 gm / 3.46 cm 48,832 1.32E-06 2,176.58 0.72
10 gm / 1.61 cm 4,883 1.32E-07 217.66 0.07
1 gm / 7.45 mm 488 1.32E-08 21.77 0.01
0.1 gm / 3.46 mm 49 1.32E-09 2.18 0.00
0.01 gm / 1.61 mm 5 1.32E-10 0.22 0.00
0.001 gm / 0.75 mm 0 1.32E-11 0.02 0.00

Weight of pure Gramaccioliite-(Y) in grams (gm) and Calculated Diameter of a Sphere with a Density of 4.61 gm/cc.*
Goverment Estimate of Average Annual Exposure (360 mRem)**
Note: 10 microsieverts/hr = 1 mRem/hr **
Max Permissable Adult Dose 50,000 mRem/yr (hands), 15,000 mRem/yr (eyes)
Lethal Dose LD(50) Exposure 400,000 to 500,000 mRem
Estimated Thorium Activity ( 0.05 % Th) From Sum REE Elements ( 0.93 % REE)

Gramaccioliite-(Y) Classification

Help on Dana Class: Dana Class:

08.05.01.11 (08)Multiple Oxides with Nb, Ta, and Ti

(08.05)Dana Type

(08.05.01)Crichtonite group (ABC18 T2 O38)

08.05.01.01 Landauite NaMnZn2(Ti,Fe)6Ti12O38 R 3 3

08.05.01.02 Loveringite (Ca,Ce)(Ti,Fe,Cr,Mg)21O38 R 3 3

08.05.01.03 Crichtonite (Sr,La,Ce,Y)(Ti,Fe,Mn)21O38 R 3 3

08.05.01.04 Senaite Pb(Ti,Fe,Mn)21O38 R 3 3

08.05.01.05 Davidite-(La) (La,Ce,Ca)(Y,U)(Ti,Fe)20O38 R 3 3

08.05.01.06 Davidite-(Ce) (Ce,La)(Y,U)(Ti,Fe)20O38 R 3 3

08.05.01.07 Mathiasite (K,Ca,Sr)(Ti,Cr,Fe,Mg)21O38 R 3 3

08.05.01.08 Lindsleyite (Ba,Sr)(Ti,Cr,Fe,Mg)21O38 R 3 3

08.05.01.09 Dessauite! (Sr,Pb)(Y,U)(Ti,Fe)20O38 P 3 3

08.05.01.10 Cleusonite! Pb(U,U)(Ti,Fe,Fe)20(O,OH)38 R 3 3

08.05.01.11 Gramaccioliite-(Y)! (Pb,Sr)(Y,Mn)Fe2(Ti,Fe)18O38 R 3 3

Help on Strunz Class: Strunz Class:

04.CC.40 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate

04.C - Metal:Oxygen = 2:3, 3:5, and Similar

04.CC -With large and medium-sized cations

04.CC.40 Crichtonite (Sr,La,Ce,Y)(Ti,Fe,Mn)21O38 R 3 3

04.CC.40 Dessauite! (Sr,Pb)(Y,U)(Ti,Fe)20O38 P 3 3

04.CC.40 Davidite-(Ce) (Ce,La)(Y,U)(Ti,Fe)20O38 R 3 3

04.CC.40 Davidite-(La) (La,Ce,Ca)(Y,U)(Ti,Fe)20O38 R 3 3

04.CC.40 Mathiasite (K,Ca,Sr)(Ti,Cr,Fe,Mg)21O38 R 3 3

04.CC.40 Lindsleyite (Ba,Sr)(Ti,Cr,Fe,Mg)21O38 R 3 3

04.CC.40 Landauite NaMnZn2(Ti,Fe)6Ti12O38 R 3 3

04.CC.40 Loveringite (Ca,Ce)(Ti,Fe,Cr,Mg)21O38 R 3 3

04.CC.40 Senaite Pb(Ti,Fe,Mn)21O38 R 3 3

04.CC.40 Cleusonite! Pb(U,U)(Ti,Fe,Fe)20(O,OH)38 R 3 3

04.CC.40 Gramaccioliite-(Y)! (Pb,Sr)(Y,Mn)Fe2(Ti,Fe)18O38 R 3 3

Other Gramaccioliite-(Y) Information

Help on References: References:

NAME( AmMin 89:1827) PHYS. PROP.(AmMin 89:1827) OPTIC PROP.(AmMin 89:1827)

Help on See Also: See Also:

Links to other databases for Gramaccioliite-(Y) :
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 Gramaccioliite-(Y) using:

[AOL] [Bing] [Dog Pile] [GeoScienceWorld] [HotBot] [Ixquick] [Lycos] [MAMMA] [Scirus] [Teoma] [WebCrawler] [Wikipedia] [YAHOO]

Visit our Advertisers for Gramaccioliite-(Y) :

A Bijoux Google Search for Gramaccioliite-(Y)
Adam's Minerals Google Search for Gramaccioliite-(Y)
Cape Minerals Google Search for Gramaccioliite-(Y)
Dakota Matrix Minerals Google Search for Gramaccioliite-(Y)
Excalibur Mineral Corp. Google Search for Gramaccioliite-(Y)
Exceptional Minerals Google Search for Gramaccioliite-(Y)
John Betts Fine Minerals Search for Gramaccioliite-(Y)
McDougall Minerals Google Search for Gramaccioliite-(Y)
Mineral News Website Link
Rock and Mineral Shows Google Search for Gramaccioliite-(Y)
Weinrich Minerals, Inc. Google Search for Gramaccioliite-(Y)

Ask about Gramaccioliite-(Y) 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 Espa�ol

Print or Cut-and-Paste your Gramaccioliite-(Y) Specimen Label here :

Gramaccioliite-(Y)

(Pb,Sr)(Y,Mn)Fe2(Ti,Fe)18O38
Dana No: 08.05.01.11 Strunz No: 04.CC.40
Locality:

Notes: