Miserite Mineral Data

Miserite Mineral Data +

[Current Minerals] [Order Status] [Policies] [e-Bay Items]
B & L Minerals, Fine Mineral specimens for sale for collectors of all levels

General Miserite Information

Chemical Formula:

K(Ca,Ce)5[Si8O22](OH,F)2

Composition:

Molecular Weight = 901.19 gm

Potassium 4.34 % K 5.23 % K₂O

Calcium 20.01 % Ca 28.00 % CaO

Cerium 7.77 % Ce 9.11 % Ce₂O₃

Silicon 24.93 % Si 53.34 % SiO₂

Hydrogen 0.17 % H 1.50 % H₂O

Oxygen 41.72 % O

Fluorine 1.05 % F 1.05 % F

- % F -0.44 % -O=F₂

______ ______

100.00 % 97.78 % = TOTAL OXIDE

Empirical Formula:

KCa_4.5Ce_0.5Si₈O₂₂(OH)_1.5F_0.5

Environment:

Metamorphosed shale with wollastonite.

IMA Status:

Valid Species (Pre-IMA) 1950

Locality:

Wilson Mineral Springs, Arkansas, USA. Link to MinDat.org Location Data.

Name Origin:

Named for Hugh Dinsmore Miser (1884-1969), geologist, U. S. Geological Survey.

Synonym:

ICSD 30121

PDF 22-806

Miserite Image

Images:

Miserite

Comments: Silky crystalline inclusions of maroon-colored miserite with a dark amphibole and white feldspar.
Location: Hodza, Achkan, Kyrgyzstan. Scale: 4.9 x 3.9 cm.
© John Veevaert

Miserite Crystallography

Axial Ratios:

a:b:c =0.6306:1:0.4606

Cell Dimensions:

a = 10.1, b = 16.014, c = 7.377, Z = 2; alpha = 96.42°, beta = 111.15°, gamma = 76.57° V = 1,075.58 Den(Calc)= 2.78

Crystal System:

Triclinic - PinacoidalH-M Symbol ( 1) Space Group: P1

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

By Intensity(I/I_o): 3.14(1), 1.641(0.8), 2.377(0.65),

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

Scott J D , The Canadian Mineralogist , 14 (1976) p.515-528, Crystal structure of miserite, a Zoltai Type 5 structure

Physical Properties of Miserite

Cleavage:

[100] Perfect, [010] Indistinct

Color:

Lilac pink, Pink, Reddish brown.

Density:

2.84 - 2.93, Average = 2.88

Diaphaniety:

Translucent

Hardness:

5.5-6 - Knife Blade-Orthoclase

Luminescence:

Fluorescent.

Luster:

Vitreous - Pearly

Streak:

white

Optical Properties of Miserite

Gladstone-Dale:

CI meas= -0.029 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= -0.068 (Fair) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2122,KPDmeas= 0.2045,KC= 0.1987

Optical Data:

Biaxial (+), a=1.587, b=1.589, g=1.594, bire=0.0070

Pleochroism (x):

colorless.

Pleochroism (y):

colorless.

Pleochroism (z):

colorless.

Calculated Properties of Miserite

Electron Density:

r_electron=2.84 gm/cc
note: r_Miserite=2.89 gm/cc.

Fermion Index

Fermion Index = 0.01211
Boson Index = 0.98789

Photoelectric:

PE_Miserite= 40.33 barns/electron
U=PE_Miserite x r_electron= 114.65 barns/cc.

Radioactivity:

GRapi = 8,232.50 (Gamma Ray American Petroleum Institute Units)

Miserite is Radioactive as defined in 49 CFR 173.403. Greater than 70 Bq / gram.

**Estimated Radioactivity from Miserite** - mild
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 / 8.72 cm	175,450	4.74E-06	8,232.50	2.71
100 gm / 4.05 cm	17,545	4.74E-07	823.25	0.27
10 gm / 1.88 cm	1,755	4.74E-08	82.32	0.03
1 gm / 8.72 mm	175	4.74E-09	8.23	0.00
0.1 gm / 4.05 mm	18	4.74E-10	0.82	0.00
0.01 gm / 1.88 mm	2	4.74E-11	0.08	0.00
0.001 gm / 0.87 mm	0	4.74E-12	0.01	0.00

Weight of pure Miserite in grams (gm) and Calculated Diameter of a Sphere with a Density of 2.89 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 ( 0.39 % Th) From Sum REE Elements ( 7.77 % REE)

Miserite Classification

Dana Class:

70.2.1.1 (70)Inosilicate Column or Tube Structures

(70.2)with Si2O7 dimers

(70.2.1)Dana Group

70.2.1.1 Miserite K(Ca,Ce)5[Si8O22](OH,F)2 P1 1

70.2.1.2 Frankamenite! K3Na3Ca5(Si12O30)[F,(OH)]4·(H2O) P1 1

Strunz Class:

VIII/F.35-30 VIII - Silicates

VIII/F - Inosilicates (chain and band) complex chain structure. Cylindric chains and others

VIII/F.35 - Ashcroftine-(Y) series

VIII/F.35-10 Canasite (Na,K)6Ca5Si12O30(OH,F)4 C 2/m 2/m

VIII/F.35-20 Frankamenite! K3Na3Ca5(Si12O30)[F,(OH)]4·(H2O) P1 1

VIII/F.35-30 Miserite K(Ca,Ce)5[Si8O22](OH,F)2 P1 1

VIII/F.35-40 Yuksporite (Sr,Ba)2K4(Ca,Na)14([],Mn,Fe){(Ti,Nb)4(O,OH)4[Si6O17]2[Si2O7]3}(H2O,OH)n,n~3 P 2₁/m 2/m

VIII/F.35-50 Charoite K5Ca8(Si6O15)2(Si2O7)Si4O9(OH)·3(H2O) P*/4 ((pseudo Ortho) 2/m

VIII/F.35-60 Eveslogite! (Ca,K,Na,Sr,Ba)48[(Ti,Nb,Fe,Mn)12(OH)12Si48O144](F,OH,Cl)14 P 2/m 2/m

Other Miserite Information

References:

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

Search for Miserite using:

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

Visit our Advertisers for Miserite :
AA Mineral Specimens
B and L Minerals
Dan Weinrich Fine Minerals
Dan Weinrich Auctions
e-Rocks Auctions
Excalibur Minerals
Exceptional Minerals
Fabre Minerals
Greenside Minerals
John Betts Fine Minerals
Masons Minerals
Minernet.it
Mineral News
Mineral of the Month Club
MineralsWeb Fine Minerals
Rockshop.cz Kalat Fine Minerals
T G Fine Minerals
Wrights Rock Shop

Translate Miserite Mineral Data :

Ask about Miserite 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 Miserite Specimen Label here :

Miserite

K(Ca,Ce)5[Si8O22](OH,F)2
Dana No: 70.2.1.1 Strunz No: VIII/F.35-30
Locality:

Notes: