Tyrolite Mineral Data

Tyrolite Mineral Data +

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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 % Cu₂O

Arsenic 17.19 % As 26.36 % As₂O₅

Hydrogen 1.85 % H 16.53 % H₂O

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(H₂O)

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.

Synonym:

Tirolit

Tyrolite Image

Images:

Tyrolite

Comments: Blue, crystalline aggregates of tyrolite on matrix.
Location: Lake Serene mine, Index, Snohomish County, Washington, USA. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

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 - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: Pmma

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 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

Diaphaniety:

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:

None.

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

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:

r_electron=3.04 gm/cc
note: r_Tyrolite=3.15 gm/cc.

Fermion Index

Fermion Index = 0.0004
Boson Index = 0.9996

Photoelectric:

PE_Tyrolite= 28.07 barns/electron
U=PE_Tyrolite x r_electron= 85.39 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Tyrolite is Not Radioactive

Tyrolite Classification

Dana Class:

42.4.3.1 (42)Hydrated Phosphates, etc., Containing Hydroxyl or Halogen

(42.4)where (AB)5 (XO4)2 Zq · x(H2O)

(42.4.3)Dana Group

42.4.3.1 Tyrolite CaCu5(AsO4)2(CO3)(OH)4·6(H2O) Pmma 2/m 2/m 2/m

Strunz Class:

VII/D.54-20 VII - Phosphates, Arsenates and Vanadates

VII/D - Water-bearing phosphates with unfamiliar anions, cations of very big and medium size: Al, Mg and Ca, Na, K

VII/D.54 - Richelsdorfite - Clinotyrolite series

VII/D.54-05 Bleasdaleite! (Ca,Fe)2Cu5(Bi,Cu)(PO4)4(H2O,OH,Cl)13 C 2/m 2/m

VII/D.54-10 Richelsdorfite Ca2Cu5Sb(AsO4)4Cl(OH)6·6(H2O) C 2/m 2/m

VII/D.54-20 Tyrolite CaCu5(AsO4)2(CO3)(OH)4·6(H2O) Pmma 2/m 2/m 2/m

VII/D.54-30 Clinotyrolite Ca2Cu9[(As,S)O4]4(OH)10·10(H2O) P 2/a 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 - Applied Mineralogy 3 -Athena 4 - EUROmin Project 5 -Google Images 6 -Google Scholar 7 -Handbook of Mineralogy (UofA) 8 -MinDAT 9 -MinMax(Deutsch) 10 -MinMax(English) 11 -Mineralienatlas (Deutsch) 12 -QUT Mineral Atlas 13 -École des Mines de Paris

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Translate Tyrolite Mineral Data :

Ask about Tyrolite here :
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Print or Cut-and-Paste your Tyrolite Specimen Label here :

Tyrolite

CaCu5(AsO4)2(CO3)(OH)4·6(H2O)
Dana No: 42.4.3.1 Strunz No: VII/D.54-20
Locality:

Notes: