Picropharmacolite Mineral Data

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



[Newest Minerals] [Mineral Auctions] [Mineral Gallery]
The Mineral Gallery's Exceptional Specimens and Mineral Hall of Fame
Visa, PayPal, and Mastercard are Welcomed


General Picropharmacolite Information

Help on Chemical Formula: Chemical Formula: Ca4Mg(AsO3OH)2(AsO4)2•11(H2O)
Help on Composition: Composition: Molecular Weight = 940.48 gm
   Calcium    17.05 %  Ca   23.85 % CaO
   Magnesium   2.58 %  Mg    4.29 % MgO
   Arsenic    31.87 %  As   48.88 % As2O5
   Hydrogen    2.57 %  H    22.99 % H2O
   Oxygen     45.93 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca4Mg(AsO3OH)2(AsO4)2•11(H2O)
Help on Environment: Environment: Secondary mineral formed in the oxidation zone of arsenic ore deposits.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1819
Help on Locality: Locality: Riechelsdorf, Hessen, Germany. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for its magnesia content and the similarity to pharmacolite.
Help on Name Pronunciation: Name Pronunciation: Picropharmacolite + Pronunciation Say PICROPHARMACOLITE
Help on Synonym: Synonym: ICSD 100730
  PDF 14-222
 

Picropharmacolite Image

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

Picropharmacolite

Comments: White, acicular crystalline sprays of picropharmacolite on matrix.
Location: Wechsel Schacht, Richelsdorf, Hesse, Germany. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals
Click Here for Larger Picropharmacolite Image in a New Browser Window Images:
Click Here for Larger Picropharmacolite Image

Picropharmacolite

Comments: Snow white acicular, radial spray of picropharmacolite with pink sainfeldite.
Location: Wilhelm Mine, Richelsdorf District, Hesse, Germany. Scale: Cluster size 6 mm.
© Tom Loomis / Dakota Matrix

Picropharmacolite Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =1.0034:1:0.497
Help on Cell Dimensions: Cell Dimensions: a = 13.547, b = 13.5, c = 6.71, Z = 2; alpha = 99.85°, beta = 96.41°, gamma = 91.6° V = 1,201.04 Den(Calc)= 2.60
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): 13.5(1), 3.18(0.8), 9.2(0.6),
Click Here for Large Picropharmacolite 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


Catti M , Ferraris G , Ivaldi G , American Mineralogist , 66 (1981) p.385-391, The crystal structure of picropharmacolite, Ca4Mg(HAsO4)2(AsO4)2*11H2O

 

Physical Properties of Picropharmacolite

Help on Cleavage: Cleavage: {100} Perfect, {010} Perfect
Help on Color: Color: Colorless, Silky white.
Help on Density: Density: 2.58
Help on Diaphaneity: Diaphaneity: Transparent to Translucent
Help on Habit: Habit: Botryoidal - "Grape-like" rounded forms (e.g.. malachite).
Help on Habit: Habit: Fibrous - Crystals made up of fibers.
Help on Habit: Habit: Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite)
Help on Hardness: Hardness: 1-2 - Between Talc and Gypsum
Help on Luminescence: Luminescence: Fluorescent, Short UV=blue-white, violet-white white, Long UV=Blue-white, violet-white white.
Help on Luster: Luster: Pearly
Help on Magnetism: Magnetism: Nonmagnetic
Help on Streak: Streak: white
 

Optical Properties of Picropharmacolite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.138 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.13 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.244,KPDmeas= 0.2459,KC= 0.216
Ncalc = 1.56
Help on Optical Data: Optical Data: Biaxial (?), a=1.631, b=1.632, g=1.64, bire=0.0090, 2V(Calc)=40, 2V(Meas)=40. Dispersion r < v strong.
 

Calculated Properties of Picropharmacolite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.57 gm/cc
note: Specific Gravity of Picropharmacolite =2.60 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0030387768
Boson Index = 0.9969612232
Help on Photoelectric: Photoelectric: PEPicropharmacolite = 23.17 barns/electron
U=PEPicropharmacolite x rElectron Density= 59.43 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Picropharmacolite is Not Radioactive
 

Picropharmacolite Classification
Help on Dana Class: Dana Class: 39.02.04.01 (39)Hydrated Acid Phosphates, etc
  (39.02)H2 (AB)5 (XO4)4 · x(H2O)
  (39.02.04)Dana Group
 
39.02.04.01 Picropharmacolite Ca4Mg(AsO3OH)2(AsO4)2•11(H2O) P1 1
Help on Strunz Class: Strunz Class: 08.CH.15 08 - PHOSPHATES, ARSENATES, VANADATES
  08.C - Phosphates without Additional Anions, with H2O
  08.CH -With large and medium-sized cations, RO4:H2O < 1:1
 
08.CH.15 Picropharmacolite Ca4Mg(AsO3OH)2(AsO4)2•11(H2O) P1 1
 

Other Picropharmacolite Information
Help on References: References: NAME( Dana8) PHYS. PROP.(Collectors Book of Fluorescent Minerals) OPTIC PROP.(Dana8)
Help on See Also: See Also: Links to other databases for Picropharmacolite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - Franklin Minerals(Dunn)
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - MinMax(Deutsch)
12 - MinMax(English)
13 - Mineralienatlas (Deutsch)
14 - QUT Mineral Atlas
15 - Ruff.Info
16 - WWW-MINCRYST

Search for Picropharmacolite using:

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

Visit our Advertisers for Picropharmacolite :

AA Mineral Specimens

B & L Fine Minerals

Crystalarium.com

Dan Weinrich Fine Minerals

Dan Weinrich Auctions

Dakota Matrix

Desert Winds Gems and Minerals

Excalibur Minerals

Exceptional Minerals

Fabre Minerals

Heliodor

John Betts Fine Minerals

Mason's Minerals

Mineral News

Mineral of the Month Club

Wrights Rock Shop

Translate Picropharmacolite Mineral Data :

Ask about Picropharmacolite 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 Picropharmacolite Specimen Label here :

Picropharmacolite

Ca4Mg(AsO3OH)2(AsO4)2•11(H2O)
Dana No: 39.02.04.01 Strunz No: 08.CH.15
Locality:

 

Notes: