Tyrolite Mineral Data
General Tyrolite Information
Chemical Formula:
CaCu5(AsO4)2(CO3)(OH)4•6(H2O)
Composition:
Molecular Weight = 871.78 gm
Calcium 4.60 % Ca 6.43 % CaO
Copper 36.45 % Cu 41.03 % Cu2 O
Arsenic 17.19 % As 26.36 % As2 O5
Hydrogen 1.85 % H 16.53 % H2 O
Carbon 1.38 % C 5.05 % CO2
Oxygen 38.54 % O
______ ______
100.00 % 95.41 % = TOTAL OXIDE
Empirical Formula:
CaCu5 (AsO4 )2 (CO3 )(OH)4 •6(H2 O)
Environment:
Secondary copper mineral found with other arsenates and sulfates.
IMA Status:
Valid Species (Pre-IMA) 1845
Locality:
Brixlegg-Schwaz District, Innsbruck, Tyrol, Austria. Link to MinDat.org Location Data.
Name Origin:
Named after the locality.
Name Pronunciation:
Tyrolite
Synonym:
Tirolit
Tyrolite Image
Images:
Images:
Tyrolite
Comments: Blue-green flattened, felted, platy crystals of tyrolite to 3mm on matrix.
Location: Centennial Eureka mine, Juab Co., Utah, USA.
Scale: Picture size 5 mm.
© Tom Loomis / Dakota Matrix
Tyrolite Crystallography
Axial Ratios:
a:b:c =0.1839:1:0.1009
Cell Dimensions:
a = 10.212, b = 55.51, c = 5.602, Z = 4; V = 3,175.60 Den(Calc)= 1.82
Crystal System:
Orthorhombic - Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: Pmma
X Ray Diffraction:
By Intensity(I/Io ): 28(1), 2.998(0.8), 14.1(0.8),
Physical Properties of Tyrolite
Cleavage:
{001} Perfect
Color:
Blue, Blue green, Green blue, Light green.
Density:
3.1 - 3.2, Average = 3.15
Diaphaneity:
Translucent
Fracture:
Brittle - Sectile - Brittle fracture with slightly sectile shavings possible.
Habit:
Botryoidal - "Grape-like" rounded forms (e.g.. malachite).
Habit:
Platy - Sheet forms (e.g. micas).
Habit:
Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite)
Hardness:
1.5-2 - Talc-Gypsum
Luminescence:
Non-fluorescent.
Luster:
Vitreous - Pearly
Streak:
pale blue
Optical Properties of Tyrolite
Gladstone-Dale:
CI meas = -0.038 (Excellent) - where the CI = (1-KPDmeas /KC ) CI calc = -0.797 (Poor) - where the CI = (1-KPDcalc /KC )
KPDcalc = 0.3938,KPDmeas = 0.2275,KC = 0.2191 Ncalc = 1.4 - 1.7
Optical Data:
Biaxial (-), a=1.694, b=1.726, g=1.73, bire=0.0360, 2V(Calc)=38, 2V(Meas)=36. Dispersion relatively strong.
Calculated Properties of Tyrolite
Electron Density:
Bulk Density (Electron Density)=3.04 gm/cc note: Specific Gravity of Tyrolite =3.15 gm/cc.
Fermion Index:
Fermion Index = 0.0004013864 Boson Index = 0.9995986136
Photoelectric:
PETyrolite = 28.07 barns/electronU=PETyrolite x r Electron Density= 85.39 barns/cc.
Radioactivity:
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Tyrolite is Not Radioactive
Tyrolite Classification
Dana Class:
42.04.03.01 (42) Hydrated Phosphates, etc., Containing Hydroxyl or Halogen
(42.04) where (AB)5 (XO4)2 Zq � x(H2O)
(42.04.03) Dana Group
42.04.03.01 Tyrolite CaCu5(AsO4)2(CO3)(OH)4•6(H2O) Pmma 2/m 2/m 2/m
Strunz Class:
08.DM.10 08 - PHOSPHATES, ARSENATES, VANADATES
08.D - Phosphates, etc
08.DM -With large and medium-sized cations, (OH, etc.):RO4 > 2:1
08.DM.10 Clinotyrolite Ca2Cu9[(As,S)O4]4(OH)10•10(H2O) P 2/a 2/m
08.DM.10 Tyrolite CaCu5(AsO4)2(CO3)(OH)4•6(H2O) Pmma 2/m 2/m 2/m
Other Tyrolite Information
References:
NAME( Duda&Rejl90) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Ford32)
See Also:
Links to other databases for Tyrolite :
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
Search for Tyrolite using:
[AOL ]
[Bing ]
[Dog Pile ]
[GeoScienceWorld ]
[HotBot ]
[Ixquick ]
[Lycos ]
[MAMMA ]
[Scirus ]
[Teoma ]
[WebCrawler ]
[Wikipedia ]
[YAHOO ]
Visit our Advertisers for Tyrolite :
Ask about Tyrolite 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
Espa�ol
Print or Cut-and-Paste your Tyrolite Specimen Label here :
Tyrolite
CaCu5(AsO4)2(CO3)(OH)4•6(H2O)
Dana No: 42.04.03.01 Strunz No: 08.DM.10
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.