Miserite Mineral Data

General Miserite Information

Chemical Formula:

K1.5-x(Ca, Y,REE)5[Si6O15][Si2O7](OH,F)2•yH2O

Composition:

Molecular Weight = 933.24 gm

Potassium 5.57 % K 6.71 % K₂O

Sodium 0.05 % Na 0.07 % Na₂O

Calcium 23.71 % Ca 33.17 % CaO

La,Ce,Pr,Nd,Sm, 2.78 % RE 3.24 % REE₂O₃

Yttrium 1.71 % Y 2.18 % Y₂O₃

Magnesium 0.05 % Mg 0.09 % MgO

Titanium 0.05 % Ti 0.09 % TiO₂

Manganese 0.18 % Mn 0.25 % Mn₂O₃

Aluminum 0.03 % Al 0.05 % Al₂O₃

Iron 0.24 % Fe 0.34 % Fe₂O₃

Silicon 24.05 % Si 51.44 % SiO₂

Hydrogen 0.26 % H 2.36 % H₂O

Oxygen 40.20 % O

Fluorine 1.12 % F 1.12 % F

- % F -0.47 % -O=F₂

______ ______

100.00 % 100.64 % = TOTAL OXIDE

Empirical Formula:

K_1.33Ca_5.52Y_0.18REE_0.18Fe³⁺_0.04Mn³⁺_0.03Mg_0.02Na_0.02Ti_0.01Si_7.99Al_0.01O₂₁(OH)(OH)_1.45F_0.55

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.

Name Pronunciation:

Miserite

Synonym:

ICSD 30121

Natroxonotlite

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 =0.6293:1:0.4588

Cell Dimensions:

a = 10.12, b = 16.079, c = 7.378, Z = 2; alpha = 96.62°, beta = 111.15°, gamma = 76.33° V = 1,080.70 Den(Calc)= 2.87

Crystal System:

Triclinic - Pinacoidal H-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),

Physical Properties of Miserite

Cleavage:

{100} Perfect, {010} Indistinct

Color:

Lilac pink, Pink, Reddish brown.

Density:

2.84 - 2.93, Average = 2.88

Diaphaneity:

Translucent

Hardness:

5.5-6 - Knife Blade-Orthoclase

Luminescence:

Fluorescent, Short UV=clear strong yellow.

Luster:

Vitreous - Pearly

Streak:

white

Optical Properties of Miserite

Gladstone-Dale:

CI meas= 0.021 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.009 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.207,KPDmeas= 0.2045,KC= 0.2089
Ncalc = 1.59 - 1.61

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:

Bulk Density (Electron Density)=2.83 gm/cc
note: Specific Gravity of Miserite =2.85 gm/cc.

Fermion Index:

Fermion Index = 0.01
Boson Index = 0.99

Photoelectric:

PE_Miserite= 22.42 barns/electron
U=PE_Miserite x r_electron= 63.41 barns/cc.

Radioactivity:

GRapi = 3,030.78 (Gamma Ray American Petroleum Institute Units)
Concentration of Miserite per GRapi unit = 329.95 (PPM)

**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 / 8.75 cm	64,126	1.73E-06	3,030.78	1.00
100 gm / 4.06 cm	6,413	1.73E-07	303.08	0.10
10 gm / 1.89 cm	641	1.73E-08	30.31	0.01
1 gm / 8.75 mm	64	1.73E-09	3.03	0.00
0.1 gm / 4.06 mm	6	1.73E-10	0.30	0.00
0.01 gm / 1.89 mm	1	1.73E-11	0.03	0.00
0.001 gm / 0.88 mm	0	1.73E-12	0.00	0.00

Weight of pure Miserite in grams (gm) and Calculated Diameter of a Sphere with a Density of 2.85 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 ( 0.14 % Th) From Sum REE Elements ( 2.78 % REE)

Miserite Classification

Dana Class:

70.02.01.01 (70)Inosilicate Column or Tube Structures

(70.02)with Si2O7 dimers

(70.02.01)Dana Group

70.02.01.01 Miserite K1.5-x(Ca,Y,REE)5[Si6O15][Si2O7](OH,F)2•yH2O P1 1

70.02.01.02 Frankamenite! K3Na3Ca5(Si12O30)[F,(OH)]4•(H2O) P1 1

Strunz Class:

09.DG.85 09 - SILICATES (Germanates)

09.D - Inosilicates* Structural terminology according to Liebau (1985)

09.DG -Inosilicates with 3-periodic single and multiple chains

09.DG.85 Miserite K1.5-x(Ca,Y,REE)5[Si6O15][Si2O7](OH,F)2•yH2O P1 1

Other Miserite Information

References:

NAME( Dana8) PHYS. PROP.(Dana8, AmMin 91:1953) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

Links to other databases for Miserite :
1 - Alkali-Nuts(English)
2 - Alkali-Nuts(Francais)
3 - Am. Min. Crystal Structure Database
4 - Athena
5 - EUROmin Project
6 - Ecole des Mines de Paris
7 - GeoScienceWorld
8 - Glendale Community College
9 - Google Images
10 - Google Scholar
11 - Handbook of Mineralogy (MinSocAm)
12 - Handbook of Mineralogy (UofA)
13 - MinDAT
14 - Mineralienatlas (Deutsch)
15 - Online Mineral Museum
16 - QUT Mineral Atlas
17 - Ruff.Info
18 - WWW-MINCRYST

Search for Miserite using:

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

Visit our Advertisers for Miserite :

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

K1.5-x(Ca, Y,REE)5[Si6O15][Si2O7](OH,F)2•yH2O
Dana No: 70.02.01.01 Strunz No: 09.DG.85
Locality:

Notes:

Dakota Matrix
Excalibur Minerals
Exceptional Minerals
Hudson Insitute
John Betts Fine Minerals
Mc Dougall Minerals
Mineral News
Rock and Mineral Shows
Weinrich Minerals, Inc.