Synchysite-(Nd) Mineral Data

[Mineral Galleries] [About Me] [e-Bay Items] [Latest News] [How to Order]
A Diverse Selection of Beautifully Unique Gem & Mineral Specimens
Desert Winds Gems & Minerals • For All Levels of Collectors Worldwide
Aesthetic & Rare Mineral Specimens • Regular Updates

General Synchysite-(Nd) Information

Chemical Formula:

CaNd(CO3)2F

Composition:

Molecular Weight = 323.33 gm

Calcium 12.40 % Ca 17.34 % CaO

Carbon 7.43 % C 27.22 % CO₂

Neodymium 44.61 % Nd 52.03 % Nd₂O₃

Oxygen 29.69 % O

Fluorine 5.88 % F 5.88 % F

- % F -2.47 % -O=F₂

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

CaNd(CO₃)₂F

IMA Status:

Approved IMA 1978

Locality:

Straz block, Holicky deposit, Ceska Lepa, Bohimia, Czech Republic. Link to MinDat.org Location Data.

Name Origin:

Named for the Nd end-member of the Synchysite-(Ce) series.

Name Pronunciation:

Synchysite-(Nd) + Pronunciation

Search for Synchysite-(Nd) Images

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.

Synchysite-(Nd) Crystallography

Axial Ratios:

a:b:c =0.5783:1:1.2951

Cell Dimensions:

a = 4.039, b = 6.984, c = 9.045, Z = 2; V = 255.14 Den(Calc)= 4.21

Crystal System:

OrthorhombicSpace Group: Unk

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 4.52(1), 9.04(0.6), 2.77(0.35),

Physical Properties of Synchysite-(Nd)

Cleavage:

None

Color:

Light violet, Light gray blue.

Density:

4.21

Habit:

Aggregates - Made of numerous individual crystals or clusters.

Hardness:

4.5 - Between Fluorite and Apatite

Luminescence:

Non-fluorescent.

Luster:

Earthy (Dull)

Streak:

white

Optical Properties of Synchysite-(Nd)

Gladstone-Dale:

CI meas= 0.052 (Good) - where the CI = (1-KPDmeas/KC)
CI calc= 0.052 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1591,KPDmeas= 0.1591,KC= 0.1679
Ncalc = 1.71

Optical Data:

Biaxial (+), a=1.61, b=1.66, g=1.74, bire=0.1300

Pleochroism (x):

light violet.

Pleochroism (y):

colorless.

Pleochroism (z):

colorless.

Calculated Properties of Synchysite-(Nd)

Electron Density:

Bulk Density (Electron Density)=3.88 gm/cc
note: Specific Gravity of Synchysite-(Nd) =4.21 gm/cc.

Fermion Index:

Fermion Index = 0.09
Boson Index = 0.91

Photoelectric:

PE_{Synchysite-(Nd)}= 255.48 barns/electron
U=PE_{Synchysite-(Nd)} x r_electron= 991.28 barns/cc.

Radioactivity:

GRapi = 43,855.66 (Gamma Ray American Petroleum Institute Units)
Concentration of Synchysite-(Nd) per GRapi unit = 22.80 (PPM)

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

Estimated Maximum U.S. Postal Shipping Size (10 mRem/hr limit, Unshielded 10 cm box) 693.56 ±173.39 grams of pure Synchysite-(Nd) .

**Estimated Radioactivity from Synchysite-(Nd)** - 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 / 7.68 cm	999,266	2.70E-05	43,855.66	14.42
100 gm / 3.57 cm	99,927	2.70E-06	4,385.57	1.44
10 gm / 1.66 cm	9,993	2.70E-07	438.56	0.14
1 gm / 7.68 mm	999	2.70E-08	43.86	0.01
0.1 gm / 3.57 mm	100	2.70E-09	4.39	0.00
0.01 gm / 1.66 mm	10	2.70E-10	0.44	0.00
0.001 gm / 0.77 mm	1	2.70E-11	0.04	0.00

Weight of pure Synchysite-(Nd) in grams (gm) and Calculated Diameter of a Sphere with a Density of 4.21 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 ( 2.23 % Th) From Sum REE Elements (44.61 % REE)

Synchysite-(Nd) Classification

Dana Class:

16a.01.03.03 (16a)Carbonates - Hydroxyl or Halogen

(16a.01)in the Bastnasite/Shynchysite/Parasite Groups

(16a.01.03)Synchysite Subgroup

16a.01.03.01 Synchysite-(Ce) CaCe(CO3)2F C 2/c 2/m

16a.01.03.02 Synchysite-(Y) CaY(CO3)2F C 2/c 2/m

16a.01.03.03 Synchysite-(Nd) CaNd(CO3)2F Unk Ortho

Strunz Class:

05.BD.20c 05 - CARBONATES (NITRATES)

05.B - Carbonates with additional anions, without H2O

05.BD -With rare-earth elements (REE)

05.BD.20c Synchysite-(Ce) CaCe(CO3)2F C 2/c 2/m

05.BD.20c Synchysite-(Nd) CaNd(CO3)2F Unk Ortho

05.BD.20c Synchysite-(Y) CaY(CO3)2F C 2/c 2/m

Other Synchysite-(Nd) Information

References:

NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Dana8)

See Also:

Links to other databases for Synchysite-(Nd) :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - Google Images
4 - Google Scholar
5 - Handbook of Mineralogy (UofA)
6 - MinDAT
7 - MinMax(Deutsch)
8 - MinMax(English)
9 - Mineralienatlas (Deutsch)
10 - QUT Mineral Atlas
11 - Ruff.Info

Search for Synchysite-(Nd) using:

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

Visit our Advertisers for Synchysite-(Nd) :

AA Mineral Specimens

B & L Fine Minerals

Crystalarium.com

Dan Weinrich Fine Minerals

Dan Weinrich Auctions

Dakota Matrix

Desert Winds Gems and Minerals

John Betts Fine Minerals

Mason's Minerals

Mineral News

Mineral of the Month Club

Wrights Rock Shop

Translate Synchysite-(Nd) Mineral Data :

Ask about Synchysite-(Nd) 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 Español

Print or Cut-and-Paste your Synchysite-(Nd) Specimen Label here :

Synchysite-(Nd)

CaNd(CO3)2F
Dana No: 16a.01.03.03 Strunz No: 05.BD.20c
Locality:

Notes: