Hurlbutite Mineral Data

Hurlbutite Mineral Data
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General Hurlbutite Information

Help on Chemical Formula: Chemical Formula: CaBe2(PO4)2
Help on Composition: Composition: Molecular Weight = 248.05 gm
   Calcium     16.16 %  Ca   22.61 % CaO
   Beryllium    7.27 %  Be   20.17 % BeO
   Phosphorus  24.97 %  P    57.23 % P2O5
   Oxygen      51.60 %  O
              ______        ______ 
              100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: CaBe2(PO4)2
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1952
Help on Locality: Locality: G. E. Smith mine, Newport, Sullivan County, New Hampshire, USA. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Cornelius S. Hurlbut, Jr. (1906-), professor of mineralogy, Harvard University, Cambridge.
Help on Name Pronunciation: Name Pronunciation: Hurlbutite + Pronunciation Say HURLBUTITE
Help on Synonym: Synonym: ICSD 6189
  PDF 34-1441
 

Hurlbutite Image

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Hurlbutite   Roscherite

Comments: White, round crystal clusters of hurlbutite on reddish brown roscherite.
Location: Tip Top mine, Custer, Custer County, South Dakota, USA. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Hurlbutite Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =0.945:1:0.8879
Help on Cell Dimensions: Cell Dimensions: a = 8.299, b = 8.782, c = 7.798, Z = 4; beta = 90.5° V = 568.31 Den(Calc)= 2.90
Help on Crystal System: Crystal System: Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 21/a
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.67(1), 2.78(0.9), 3.03(0.9),
Click Here for Large Hurlbutite Structure Window Crystal Structure:

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Lindbloom J T , Gibbs G V , Ribbe P H , American Mineralogist , 59 (1974) p.1267-1271, The crystal structure of hurlbutite: A comparison with danburite and anorthite

 

Physical Properties of Hurlbutite

Help on Cleavage: Cleavage: None
Help on Color: Color: Colorless, Greenish white, Yellow.
Help on Density: Density: 2.877
Help on Diaphaneity: Diaphaneity: Transparent to Translucent
Help on Fracture: Fracture: Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments.
Help on Habit: Habit: Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).
Help on Hardness: Hardness: 6 - Orthoclase
Help on Luminescence: Luminescence: Non-fluorescent.
Help on Luster: Luster: Vitreous - Greasy
Help on Streak: Streak: white
 

Optical Properties of Hurlbutite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.04 (Good) - where the CI = (1-KPDmeas/KC)
CI calc= -0.031 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2069,KPDmeas= 0.2086,KC= 0.2006
Ncalc = 1.58
Help on Optical Data: Optical Data: Biaxial (-), a=1.595, b=1.601, g=1.604, bire=0.0090, 2V(Calc)=70, 2V(Meas)=70. Dispersion r > v weak.
 

Calculated Properties of Hurlbutite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.85 gm/cc
note: Specific Gravity of Hurlbutite =2.90 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.07
Boson Index = 0.93
Help on Photoelectric: Photoelectric: PEHurlbutite = 3.27 barns/electron
U=PEHurlbutite x rElectron Density= 9.32 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Hurlbutite is Not Radioactive
 

Hurlbutite Classification
Help on Dana Class: Dana Class: 38.03.06.01 (38)Anhydrous Phosphates, etc
  (38.03)(A+ B++)3 (XO4)2
  (38.03.06)Dana Group
 
38.03.06.01 Hurlbutite CaBe2(PO4)2 P 21/a 2/m
Help on Strunz Class: Strunz Class: 08.AA.15 08 - PHOSPHATES, ARSENATES, VANADATES
  08.A - Phosphates, etc. without additional anions, without H2O
  08.AA -With small cations (some also with larger ones)
 
08.AA.15 Hurlbutite CaBe2(PO4)2 P 21/a 2/m
 

Other Hurlbutite Information
Help on References: References: PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Dana8)
Help on See Also: See Also: Links to other databases for Hurlbutite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - Google Images
6 - Google Scholar
7 - Handbook of Mineralogy (MinSocAm)
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

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Print or Cut-and-Paste your Hurlbutite Specimen Label here :

Hurlbutite

CaBe2(PO4)2
Dana No: 38.03.06.01 Strunz No: 08.AA.15
Locality:

 

Notes: