Clinotyrolite Mineral Data

General Clinotyrolite Information

Chemical Formula:

Ca2Cu9[(As,S)O4]4(OH)10•10(H2O)

Composition:

Molecular Weight = 1,562.71 gm

Calcium 5.13 % Ca 7.18 % CaO

Copper 36.60 % Cu 41.20 % Cu₂O

Arsenic 18.22 % As 27.94 % As₂O₅

Hydrogen 1.97 % H 17.58 % H₂O

Sulfur 0.62 % S 1.54 % SO₃

Oxygen 37.47 % O

______ ______

100.00 % 95.44 % = TOTAL OXIDE

Empirical Formula:

Ca₂Cu₉(AsO₄)_3.8(SO₄)_0.3(OH)_9.9•10.3(H₂O)

Environment:

In the oxidized zone of a copper deposit.

IMA Status:

Approved IMA 1980

Locality:

Dongchuan copper mine, Yunnan Province, China. Link to MinDat.org Location Data.

Name Origin:

For the monoclinic symmetry and relationship to tyrolite.

Name Pronunciation:

Clinotyrolite + Pronunciation

Clinotyrolite Image

Images:

Click Here for Larger Clinotyrolite Image

Clinotyrolite Azurite

Comments: Light blue acicular crystals of clinotyrolite on dark blue azurite.
Location: Lovelock mine, Churchill County, Nevada, USA. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Clinotyrolite Crystallography

Axial Ratios:

a:b:c =1.8908:1:4.9658

Cell Dimensions:

a = 10.513, b = 5.56, c = 27.61, Z = 2; beta = 94° V = 1,609.94 Den(Calc)= 3.22

Crystal System:

Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 2/a

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

By Intensity(I/I_o): 2.673(1), 2.96(1), 4.81(0.9),

Physical Properties of Clinotyrolite

Color:

Emerald green.

Density:

3.22

Diaphaneity:

Semitransparent

Habit:

Foliated - Two dimensional platy forms.

Habit:

Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite)

Luster:

Silky - Pearly

Streak:

light green

Optical Properties of Clinotyrolite

Gladstone-Dale:

CI meas= 0.034 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.034 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2118,KPDmeas= 0.2118,KC= 0.2193
Ncalc = 1.71

Optical Data:

Biaxial (-), a=1.666, b=1.686, g=1.694, bire=0.0280, 2V(Calc)=62, 2V(Meas)=65-66.

Calculated Properties of Clinotyrolite

Electron Density:

Bulk Density (Electron Density)=3.11 gm/cc
note: Specific Gravity of Clinotyrolite =3.22 gm/cc.

Fermion Index:

Fermion Index = 0.0002982302
Boson Index = 0.9997017698

Photoelectric:

PE_{Clinotyrolite}= 28.92 barns/electron
U=PE_{Clinotyrolite} x rElectron Density= 89.93 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Clinotyrolite is Not Radioactive

Clinotyrolite Classification

Dana Class:

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

(42.04)where (AB)5 (XO4)2 Zq · x(H2O)

(42.04.04)Dana Group

42.04.04.01 Clinotyrolite Ca2Cu9[(As,S)O4]4(OH)10•10(H2O) P 2/a 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 Clinotyrolite Information

References:

NAME( AntBidBlaNic4) PHYS. PROP.(AntBidBlaNic4) OPTIC PROP.(AntBidBlaNic4)

See Also:

Links to other databases for Clinotyrolite :
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

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Ask about Clinotyrolite 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 Español

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

Clinotyrolite

Ca2Cu9[(As,S)O4]4(OH)10•10(H2O)
Dana No: 42.04.04.01 Strunz No: 08.DM.10
Locality:

Notes: