Kamphaugite-(Y) Mineral Data

[Fine Minerals] [What's New] [Mineral Galleries] [My Collection] [Mineral Auctions]
Dan Weinrich Fine Minerals
Full-time professional mineral dealer with over 31 years experience in mineral collecting
And 15 years selling mineral specimens on the internet and at major mineral shows

General Kamphaugite-(Y) Information

Chemical Formula:

(Ca1.84REEx)(Y1.46REE0.54-x)(CO3)4(OH)1.65•2(H2O)

Composition:

Molecular Weight = 585.44 gm

Calcium 12.60 % Ca 17.62 % CaO

La,Ce,Pr,Nd,Sm, 13.28 % RE 15.50 % REE₂O₃

Yttrium 22.17 % Y 28.16 % Y₂O₃

Hydrogen 0.97 % H 8.69 % H₂O

Carbon 8.21 % C 30.07 % CO₂

Oxygen 42.77 % O

______ ______

100.00 % 100.04 % = TOTAL OXIDE

Empirical Formula:

Ca_1.84Y_1.46REE_0.54(CO₃)₄(OH)_1.65•2(H₂O)

Environment:

Secondary mineral in REE-bearing granites or alteration product of kuliokite-(Y).

IMA Status:

Approved IMA 1993

Locality:

Hortekollen, Hoydalen, Oslo region, Norway Link to MinDat.org Location Data.

Name Origin:

Named for Erling Kamphaug (1931-), Norwegian mineral collector.

Name Pronunciation:

Kamphaugite-(Y) + Pronunciation

Synonym:

ICSD 66680

IMA1987-043

PDF 46-1399

Kamphaugite-(Y) Image

Images:

Kamphaugite-(Y)

Comments: Small white crystals of kamphaugite-(Y).
Location: Tørdal (Hjøndalen), Telemark, Norway. Scale: Picture size 3 mm.
© Thomas Witzke / Abraxas-Verlag

Kamphaugite-(Y) Crystallography

Axial Ratios:

a:c = 1:2.93153

Cell Dimensions:

a = 7.434, c = 21.793, Z = 4; V = 1,204.38 Den(Calc)= 3.23

Crystal System:

Tetragonal - TrapezohedralH-M Symbol (4 2 2) Space Group: P 4₁2₁2

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

By Intensity(I/I_o): 6.14(1), 4.381(0.8), 3.516(0.6),

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

Romming C , Kocharian A K , Raade G , European Journal of Mineralogy , 5 (1993) p.685-690, The crystal structure of kamphaugite-(Y)

Physical Properties of Kamphaugite-(Y)

Cleavage:

None

Color:

Brown, Colorless, White, Light yellow.

Density:

3.19

Diaphaneity:

Transparent

Habit:

Spherical - Spherical, rounded aggregates.

Hardness:

2-3 - Gypsum-Calcite

Luster:

Vitreous (Glassy)

Streak:

white

Optical Properties of Kamphaugite-(Y)

Gladstone-Dale:

CI meas= -0.021 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= -0.008 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1997,KPDmeas= 0.2022,KC= 0.1981
Ncalc = 1.63 - 1.64

Optical Data:

Uniaxial (-), e=1.627, w=1.663, bire=0.0360.

Calculated Properties of Kamphaugite-(Y)

Electron Density:

Bulk Density (Electron Density)=3.11 gm/cc
note: Specific Gravity of Kamphaugite-(Y) =3.23 gm/cc.

Fermion Index:

Fermion Index = 0.02
Boson Index = 0.98

Photoelectric:

PE_{Kamphaugite-(Y)}= 107.03 barns/electron
U=PE_{Kamphaugite-(Y)} x r_electron= 332.49 barns/cc.

Radioactivity:

GRapi = 13,675.32 (Gamma Ray American Petroleum Institute Units)
Concentration of Kamphaugite-(Y) per GRapi unit = 73.12 (PPM)

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

**Estimated Radioactivity from Kamphaugite-(Y)** - 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 / 8.39 cm	298,594	8.07E-06	13,675.32	4.50
100 gm / 3.90 cm	29,859	8.07E-07	1,367.53	0.45
10 gm / 1.81 cm	2,986	8.07E-08	136.75	0.04
1 gm / 8.39 mm	299	8.07E-09	13.68	0.00
0.1 gm / 3.90 mm	30	8.07E-10	1.37	0.00
0.01 gm / 1.81 mm	3	8.07E-11	0.14	0.00
0.001 gm / 0.84 mm	0	8.07E-12	0.01	0.00

Weight of pure Kamphaugite-(Y) in grams (gm) and Calculated Diameter of a Sphere with a Density of 3.23 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 ( 0.66 % Th) From Sum REE Elements (13.28 % REE)

Kamphaugite-(Y) Classification

Dana Class:

16b.01.07.01 (16b)Carbonates - Hydroxyl or Halogen

(16b.01)where (A)m (B)n (XO3)p Zq, with (m+n):p=1:1

(16b.01.07)Dana Group

16b.01.07.01 Kamphaugite-(Y) (Ca1.84REEx)(Y1.46REE0.54-x)(CO3)4(OH)1.65•2(H2O) P 4₁2₁2 4 2 2

Strunz Class:

05.DC.10 05 - CARBONATES (NITRATES)

05.D - Carbonates with Additional Anions, with H2O

05.DC -With large cations

05.DC.10 Kamphaugite-(Y) (Ca1.84REEx)(Y1.46REE0.54-x)(CO3)4(OH)1.65•2(H2O) P 4₁2₁2 4 2 2

Other Kamphaugite-(Y) Information

References:

NAME( Dana8) PHYS. PROP.(37th List of New Min.,Min. Mag.,1996) OPTIC PROP.(37th List of New Min.,Min. Mag.,19)

See Also:

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

Search for Kamphaugite-(Y) using:

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

Visit our Advertisers for Kamphaugite-(Y) :

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 Kamphaugite-(Y) Mineral Data :

Ask about Kamphaugite-(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 Español

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

Kamphaugite-(Y)

(Ca1.84REEx)(Y1.46REE0.54-x)(CO3)4(OH)1.65•2(H2O)
Dana No: 16b.01.07.01 Strunz No: 05.DC.10
Locality:

Notes: