Henmilite Mineral Data

Henmilite Mineral Data
Search Webmineral :
   
Home Crystal jmol jPOWD Chem X Ray Dana Strunz Properties A to Z Images       News Help About



[Content and History] [Recent Issues] [Back Issues] [Subscriptions] [Contacts]
See Also: [Diamond Crystals] [Excalibur Minerals] [Hudson Institute] [Minerals on CDROM]
Mineral News was founded some twenty years ago and has developed a following of
avid mineral collectors seeking timely information about new finds and other items
of interest to the collector community. Articles are solicited from collector and scientific authors.


General Henmilite Information

Help on Chemical Formula: Chemical Formula: Ca2Cu[B(OH)4]2(OH)4
Help on Composition: Composition: Molecular Weight = 369.41 gm
   Calcium   21.70 %  Ca   30.36 % CaO
   Copper    17.20 %  Cu   21.53 % CuO
   Boron      5.85 %  B    18.85 % B2O3
   Hydrogen   3.27 %  H    29.26 % H2O
   Oxygen    51.97 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca2CuB2(OH)12
Help on Environment: Environment: In borate veins cutting contact-metasomatized marble.
Help on IMA Status: IMA Status: Approved IMA 1986
Help on Locality: Locality: Fuka mine, Okayama, Prefecture, Japan. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Kitinosuke Henmi (1919-1997) and his daughter Chiyoko Henmi (1949-) for their work on the Skarn deposit at Fuka, Japan.
Help on Name Pronunciation: Name Pronunciation: Henmilite + Pronunciation Say HENMILITE
Help on Synonym: Synonym: ICSD 202148
  PDF 40-481
 

Henmilite Image

Click Here for Larger Henmilite Image in a New Browser Window Images:
Click Here for Larger Henmilite Image

Henmilite

Comments: Blue crystals of henmilite in matrix.
Location: Fuka Mine, Bitchu-Cho, Okayama Prefecture, Chugoku Region, Honshu Island, Japan. Scale: Crystal size 3 mm.
© John Veevaert
Click Here for Larger Henmilite Image in a New Browser Window Images:
Click Here for Larger Henmilite Image

Henmilite   Olshanskyite

Comments: Milky white olshanskyite hosting crystals of deep blue henmilite to 6 mm across.
Location: Fuka Mine, Bicchu Town, Kawakama Co., Okayama Pref., Japan. Scale: Crystal size 6 mm.
© John Veevaert

Henmilite Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =0.7222:1:0.7081
Help on Cell Dimensions: Cell Dimensions: a = 5.7617, b = 7.9774, c = 5.6488, Z = 1; alpha = 109.611°, beta = 91.473°, gamma = 83.686° V = 243.01 Den(Calc)= 2.52
Help on Crystal System: Crystal System: Triclinic - PinacoidalH-M Symbol ( 1) Space Group: P1
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 5.25(1), 4.35(0.5), 3.709(0.4),
Click Here for Large Henmilite Structure Window 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


Nakai I , Okada H , Masutomi K , Koyama E , Nagashima K , American Mineralogist , 71 (1986) p.1236-1239, Henmilite, Ca2Cu(OH)4[B(OH)4]2, a new mineral from Fuka, Okayama Prefecture,, Japan. II. Crystal structure

 

Physical Properties of Henmilite

Help on Color: Color: Bluish violet.
Help on Density: Density: 2.51
Help on Diaphaneity: Diaphaneity: Transparent
Help on Fracture: Fracture: Fragile - Crystals with a delicate and easily injured structure.
Help on Habit: Habit: Microscopic Crystals - Crystals visible only with microscopes.
Help on Hardness: Hardness: 1.5-2 - Talc-Gypsum
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: pale violet
 

Optical Properties of Henmilite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.001 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.005 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2392,KPDmeas= 0.2401,KC= 0.2404
Ncalc = 1.6 - 1.61
Help on Optical Data: Optical Data: Biaxial (-), a=1.585, b=1.608, g=1.615, bire=0.0300, 2V(Calc)=56, 2V(Meas)=58.
Help on Pleochroism (x): Pleochroism (x): pale pink.
Help on Pleochroism (y): Pleochroism (y): pale purple.
Help on Pleochroism (z): Pleochroism (z): pale blue.
 

Calculated Properties of Henmilite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.54 gm/cc
note: Specific Gravity of Henmilite =2.51 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PEHenmilite = 9.95 barns/electron
U=PEHenmilite x rElectron Density= 25.27 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Henmilite is Not Radioactive
 

Henmilite Classification
Help on Dana Class: Dana Class: 26.01.05.01 (26)Hydrated Borates Containing Hydroxyl or Halogen
  (26.01)Dana Type
  (26.01.05)Dana Group
 
26.01.05.01 Henmilite Ca2Cu[B(OH)4]2(OH)4 P1 1
Help on Strunz Class: Strunz Class: 06.AC.30 06 - BORATES
  06.A - Monoborates
  06.AC -B(O,OH)4, without and with additional anions; 1(T), 1(T)+OH, etc.
 
06.AC.30 Henmilite Ca2Cu[B(OH)4]2(OH)4 P1 1
 

Other Henmilite Information
Help on References: References: NAME( AntBidBlaNic5) PHYS. PROP.(Am.Min.,Vol.71,p1234-1239,1986) OPTIC PROP.(Dana8)
Help on See Also: See Also: Links to other databases for Henmilite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info
15 - WWW-MINCRYST

Search for Henmilite using:

Google
 
Web webmineral.com
[ALTAVISTA] [AOL] [bing] [GeoScienceWorld] [HotBot] [Ixquick] [MAMMA] [MSN.COM] [Netscape] [Scirus] [Teoma] [Wikipedia] [YAHOO]

Visit our Advertisers for Henmilite :

B & L Fine Minerals

Dan Weinrich Fine Minerals

Dan Weinrich Auctions

Dakota Matrix

Excalibur Minerals

Exceptional Minerals

Fabre Minerals

John Betts Fine Minerals

Lapis Mineral Journal

Mineral News

UV Tools

Wrights Rock Shop

Translate Henmilite Mineral Data :

Ask about Henmilite 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 Espaņol

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

Henmilite

Ca2Cu[B(OH)4]2(OH)4
Dana No: 26.01.05.01 Strunz No: 06.AC.30
Locality:

 

Notes: