Zapatalite Mineral Data

General Zapatalite Information

Chemical Formula:

Cu3Al4(PO4)3(OH)9•4(H2O)

Composition:

Molecular Weight = 808.61 gm

Aluminum 13.35 % Al 25.22 % Al₂O₃

Copper 23.58 % Cu 29.51 % CuO

Phosphorus 11.49 % P 26.33 % P₂O₅

Hydrogen 2.12 % H 18.94 % H₂O

Oxygen 49.47 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Cu₃Al₄(PO₄)₃(OH)₉•4(H₂O)

Environment:

Replacement of libethenite and pseudomalachite.

IMA Status:

Approved IMA 1972

Locality:

Cerro Morita Naco, 27 km SW of Agua Prieta, Sonora, Mexico. Link to MinDat.org Location Data.

Name Origin:

Named for Emiliano Zapata (1879-1919), hero of the Mexican Revolution.

Name Pronunciation:

Zapatalite + Pronunciation

Zapatalite Image

Images:

Zapatalite

Comments: Bright blue zapatalite coating on rock.
Location: near Battle Mountain, Lander County, Nevada, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Zapatalite Crystallography

Axial Ratios:

a:c = 1:0.75689

Cell Dimensions:

a = 15.22, c = 11.52, Z = 6; V = 2,668.59 Den(Calc)= 3.02

Crystal System:

TetragonalSpace Group: Unk

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

By Intensity(I/I_o): 7.62(1), 11.6(1), 6.82(0.7),

Physical Properties of Zapatalite

Cleavage:

{001} Good

Color:

Light blue.

Density:

3.016

Diaphaneity:

Translucent

Fracture:

Sectile - Curved shavings or scrapings produced by a knife blade, (e.g. graphite).

Hardness:

1.5 - Between Talc and Gypsum

Streak:

light blue

Optical Properties of Zapatalite

Dichroism (e):

weak blue.

Dichroism (w):

weak blue.

Gladstone-Dale:

CI meas= 0.012 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.013 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2121,KPDmeas= 0.2124,KC= 0.2149
Ncalc = 1.65

Optical Data:

Uniaxial (-), e=1.635, w=1.646, bire=0.0110.

Calculated Properties of Zapatalite

Electron Density:

Bulk Density (Electron Density)=2.99 gm/cc
note: Specific Gravity of Zapatalite =3.02 gm/cc.

Fermion Index:

Fermion Index = 0.0002406156
Boson Index = 0.9997593844

Photoelectric:

PE_Zapatalite= 11.01 barns/electron
U=PE_Zapatalite x rElectron Density= 32.94 barns/cc.

Radioactivity:

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

Zapatalite Classification

Dana Class:

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

(42.05)where (A)2 (XO4) Zq · x(H2O)

(42.05.03)Dana Group

42.05.03.01 Zapatalite Cu3Al4(PO4)3(OH)9•4(H2O) Unk Tetra

Strunz Class:

08.DE.20 08 - PHOSPHATES, ARSENATES, VANADATES

08.D - Phosphates, etc

08.DE -With only medium-sized cations, (OH, etc.):RO4 = 3:1

08.DE.20 Zapatalite Cu3Al4(PO4)3(OH)9•4(H2O) Unk Tetra

Other Zapatalite Information

References:

NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

Links to other databases for Zapatalite :
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 Zapatalite 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 Zapatalite Specimen Label here :

Zapatalite

Cu3Al4(PO4)3(OH)9•4(H2O)
Dana No: 42.05.03.01 Strunz No: 08.DE.20
Locality:

Notes: