Joaquinite-(Ce) Mineral Data

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


Masons Minerals
[Thumbnails] [Miniatures] [Cabinets] [About Us] [FAQ]
Welcome To Mason's Minerals
Your Source for Beautiful Minerals and Crystals
We offer a no-questioned-asked Satisfaction Guarantee


General Joaquinite-(Ce) Information

Help on Chemical Formula: Chemical Formula: NaFe++Ba2Ce2(Ti,Nb)2[Si4O12]2O2(OH,F)•(H2O)
Help on Composition: Composition: Molecular Weight = 1,419.19 gm
   Barium    19.35 %  Ba   21.61 % BaO
   Sodium     1.62 %  Na    2.18 % Na2O
   Cerium    19.75 %  Ce   23.13 % Ce2O3
   Titanium   3.37 %  Ti    5.63 % TiO2
   Niobium    6.55 %  Nb    9.36 % Nb2O5
   Iron       3.94 %  Fe    5.06 % FeO
   Silicon   15.83 %  Si   33.87 % SiO2
   Hydrogen   0.18 %  H     1.59 % H2O
   Oxygen    28.75 %  O
   Fluorine   0.67 %  F     0.67 % F
               -   %   F    -0.28 % -O=F2    
            ______        ______ 
            100.00 %      102.82 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: NaFe2+Ba2Ce2TiNb(Si4O12)2(OH)0.5F0.5•(H2O)
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1909
Help on Locality: Locality: Benitoite Gem mine, head waters of the San Benito River, Joaquin Ridge, Diablo Range, 1 mile south of Santa Rita Peak, San Benito Co. California. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after its locality.
Help on Name Pronunciation: Name Pronunciation: Joaquinite-(Ce) + Pronunciation Say JOAQUINITE-(CE)
Help on Synonym: Synonym: ICSD 4359
  IMA2000-D
  PDF 36-385
 

Joaquinite-(Ce) Image

Click Here for Larger Joaquinite-(Ce) Image in a New Browser Window Images:
Click Here for Larger Joaquinite-(Ce) Image

Joaquinite-(Ce)

Comments: Brown crystal of joaquinite-(Ce).
Location: Benitoite Gem mine, San Benito County, California, USA. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Joaquinite-(Ce) Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =1.0856:1:1.2216
Help on Cell Dimensions: Cell Dimensions: a = 10.516, b = 9.686, c = 11.833, Z = 2; beta = 109.67° V = 1,134.95 Den(Calc)= 4.15
Help on Crystal System: Crystal System: Monoclinic - SphenoidalH-M Symbol (2) Space Group: C 2
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.8(1), 5.58(0.7), 2.95(0.18),
Click Here for Large Joaquinite-(Ce) 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


Dowty E , American Mineralogist , 60 (1975) p.872-878, Crystal structure of joaquinite

 

Physical Properties of Joaquinite-(Ce)

Help on Cleavage: Cleavage: {???} Good
Help on Color: Color: Brown, Honey yellow, Orange.
Help on Density: Density: 3.62 - 3.98, Average = 3.8
Help on Diaphaneity: Diaphaneity: Transparent to Translucent
Help on Fracture: Fracture: Brittle - Generally displayed by glasses and most non-metallic minerals.
Help on Habit: Habit: Euhedral Crystals - Occurs as well-formed crystals showing good external form.
Help on Hardness: Hardness: 5-5.5 - Apatite-Knife Blade
Help on Luminescence: Luminescence: Non-fluorescent.
Help on Luster: Luster: Vitreous (Glassy)
 

Optical Properties of Joaquinite-(Ce)

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.022 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.064 (Fair) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1853,KPDmeas= 0.2024,KC= 0.198
Ncalc = 1.72 - 1.82
Help on Optical Data: Optical Data: Biaxial (+), a=1.748-1.754, b=1.76-1.767, g=1.762-1.823, bire=0.0140-0.0690
Help on Pleochroism (x): Pleochroism (x): light yellow.
Help on Pleochroism (y): Pleochroism (y): light yellow.
Help on Pleochroism (z): Pleochroism (z): colorless.
 

Calculated Properties of Joaquinite-(Ce)

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.49 gm/cc
note: Specific Gravity of Joaquinite-(Ce) =3.80 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.04
Boson Index = 0.96
Help on Photoelectric: Photoelectric: PEJoaquinite-(Ce) = 196.52 barns/electron
U=PEJoaquinite-(Ce) x relectron= 685.10 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 19,322.82 (Gamma Ray American Petroleum Institute Units)
Concentration of Joaquinite-(Ce) per GRapi unit = 51.75 (PPM)

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

Estimated Radioactivity from Joaquinite-(Ce) - weak
Specimen
Size
Weight/Volume
(Sphere) *		 Calculated
Activity
Bequerols
(Bq)		 Calculated
Activity
Curies (Ci)		 Estimated
Activity
GR(api)		 Estimated
Exposure
(mRem**)/hr
If Held in Hand
For One Hour
1000 gm / 7.95 cm 442,304 1.20E-05 19,322.82 6.35
100 gm / 3.69 cm 44,230 1.20E-06 1,932.28 0.64
10 gm / 1.71 cm 4,423 1.20E-07 193.23 0.06
1 gm / 7.95 mm 442 1.20E-08 19.32 0.01
0.1 gm / 3.69 mm 44 1.20E-09 1.93 0.00
0.01 gm / 1.71 mm 4 1.20E-10 0.19 0.00
0.001 gm / 0.80 mm 0 1.20E-11 0.02 0.00

Weight of pure Joaquinite-(Ce) in grams (gm) and Calculated Diameter of a Sphere with a Density of 3.80 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 ( 0.99 % Th) From Sum REE Elements (19.75 % REE)
 

Joaquinite-(Ce) Classification
Help on Dana Class: Dana Class: 60.01.01a.01 (60)Cyclosilicate Four-Membered Rings
  (60.01)as Titanosilicates
  (60.01.01a)Joaquinite group (Clino-joaquinite subgroup)
 
60.01.01a.01 Joaquinite-(Ce) NaFeBa2Ce2(Ti,Nb)2[Si4O12]2O2(OH,F)•(H2O) C 2 2
 
60.01.01a.02 Strontiojoaquinite (Na,Fe)2Ba2Sr2Ti2[Si4O12]2(O,OH)2•(H2O) C 2 2
Help on Strunz Class: Strunz Class: 09.CE.25 09 - SILICATES (Germanates)
  09.C - Cyclosilicates
  09.CE -[Si4O12]8- 4-membered single rings (vierer-Einfachringe),
 
09.CE.25 Byelorussite-(Ce) NaBa2(Ce,La)2MnTi2Si8O26(F,OH)•(H2O) P 212121 2 2 2
 
09.CE.25 Bario-orthojoaquinite Fe2(Ba,Sr)4Ti2[Si4O12]O2•(H2O) Ccmm or Ccm2 Ortho
 
09.CE.25 Joaquinite-(Ce) NaFeBa2Ce2(Ti,Nb)2[Si4O12]2O2(OH,F)•(H2O) C 2 2
 
09.CE.25 Orthojoaquinite-(Ce) NaFeBa2Ce2Ti2[Si4O12]2O2(OH)•(H2O) Ccmm or Ccm21 Ortho
 
09.CE.25 Strontio-orthojoaquinite (Na,Fe)2Ba2Sr2Ti2[Si4O12]2(O,OH)2•(H2O) Pbcm or Pbc2 Ortho
 
09.CE.25 Strontiojoaquinite (Na,Fe)2Ba2Sr2Ti2[Si4O12]2(O,OH)2•(H2O) C 2 2
 
09.CE.25 Orthojoaquinite-(La)! Ba2Na(La,Ce)2FeTi2Si8O26(OH,O,F)•H2O Ccmm 2/m 2/m 2/m
 

Other Joaquinite-(Ce) Information
Help on References: References: NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Joaquinite-(Ce) :
1 - Alkali-Nuts(English)
2 - Alkali-Nuts(Francais)
3 - Am. Min. Crystal Structure Database
4 - Athena
5 - EUROmin Project
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (UofA)
9 - MinDAT
10 - MinMax(Deutsch)
11 - MinMax(English)
12 - Mineralienatlas (Deutsch)
13 - QUT Mineral Atlas
14 - Ruff.Info
15 - WWW-MINCRYST

Search for Joaquinite-(Ce) using:

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

Visit our Advertisers for Joaquinite-(Ce) :

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 Joaquinite-(Ce) Mineral Data :

Ask about Joaquinite-(Ce) 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 Joaquinite-(Ce) Specimen Label here :

Joaquinite-(Ce)

NaFe++Ba2Ce2(Ti,Nb)2[Si4O12]2O2(OH,F)•(H2O)
Dana No: 60.01.01a.01 Strunz No: 09.CE.25
Locality:

 

Notes: