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Zapatalite

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General Emiliano Zapata
Formula:
Cu3Al4(PO4)3(OH)9 · 4H2O
System:
Tetragonal
Colour:
Pale blue to turquoise ...
Hardness:
Name:
Named after Emiliano Zapata (1879-1919), peasant hero of the Mexican revolution. He was the Mexican rebel leader who stated that "It is better to die on your feet than to live on your knees." He was a former sharecropper who organised and led peasants during the battles of the Mexican Revolution.

Classification of Zapatalite

Approved 1971
8.DE.20

8 : PHOSPHATES, ARSENATES, VANADATES
D : Phosphates, etc. with additional anions, with H2O
E : With only medium-sized cations, (OH, etc.):RO4 = 3:1
42.5.3.1

42 : HYDRATED PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
5 : (AB)7(XO4)3Zq·xH2O
19.2.7

19 : Phosphates
2 : Phosphates of Cu
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First Recorded Occurrence of Zapatalite

Place of Conservation of First Recorded Material:
Smithsonian Institution, Washington D.C., USA
Year of Discovery:
1971

Occurrences of Zapatalite

Geological Setting:
Oxidised zone of hydrothermal deposits.

Physical Properties of Zapatalite

Diaphaneity (Transparency):
Translucent
Colour:
Pale blue to turquoise blue
Streak:
Pale blue
Hardness (Mohs):
Tenacity:
Sectile
Cleavage:
Distinct/Good
Good on {001}
Density:
3.016(26) g/cm3 (Measured)    3.017 g/cm3 (Calculated)

Crystallography of Zapatalite

Crystal System:
Tetragonal
Cell Parameters:
a = 15.223Å, c = 11.518Å
Ratio:
a:c = 1 : 0.757
Unit Cell Volume:
V 2,669.18 ų (Calculated from Unit Cell)
Z:
6
Morphology:
Massive, botryoidal crusts.
X-Ray Powder Diffraction Data:
d-spacingIntensity
11.60 (99)
7.617 (100)
6.817 (69)
5.754 (73)
4.584 (44)
3.042 (48)
2.531 (45)

Optical Data of Zapatalite

Type:
Uniaxial (-)
RI values:
nω = 1.646 nε = 1.635
Max Birefringence:
δ = 0.011
Image shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:
Moderate
Pleochroism:
Weak
Comments:
In shades of pale green
Comments:
May be biaxial

Chemical Properties of Zapatalite

Formula:
Cu3Al4(PO4)3(OH)9 · 4H2O
Essential elements:
All elements listed in formula:

Relationship of Zapatalite to other Species

Common Associates:
8.DE.05SenegaliteAl2(PO4)(OH)(OH)2 · H2O
8.DE.10FluelliteAl2(PO4)F2(OH) · 7H2O
8.DE.15BulachiteAl2(AsO4)(OH)3 · 3H2O
8.DE.25CeruleiteCu2Al7(AsO4)4(OH)13 · 11.5H2O
8.DE.35AldermaniteMg5Al12(PO4)8(OH)22 · 32H2O
8.DE.40JuanitaiteBi(Cu,Ca,Fe)10(AsO4)4(OH)11 · 2H2O
8.DE.45IangreyiteCa2Al7(PO4)2(PO3OH)2(OH,F)15 · 8H2O
19.2.1LibetheniteCu2(PO4)(OH)
19.2.2CornetiteCu3(PO4)(OH)3
19.2.3ReichenbachiteCu5(PO4)2(OH)4
19.2.4LudjibaiteCu5(PO4)2(OH)4
19.2.5PseudomalachiteCu5(PO4)2(OH)4
19.2.6NissoniteCu2Mg2(PO4)2(OH)2 · 5H2O
19.2.8TurquoiseCu(Al,Fe3+)6(PO4)4(OH)8 · 4H2O
19.2.9SieleckiiteCu3Al4(PO4)2(OH)12 · 2H2O
19.2.10PlaneriteAl6(PO4)2(HPO4)2(OH)8 · 4 H2O
19.2.11HentscheliteCuFe23+(PO4)2(OH)2
19.2.13ChalcosideriteCu(Fe3+,Al)6(PO4)4(OH)8 · 4H2O
19.2.14PhosphofibriteK<0.5(Fe3+,Cu)8(PO4)6(OH)7 · 7H2O

Other Names for Zapatalite

Name in Other Languages:
German:Zapatalit
Spanish:Zapatalita

Other Information

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Zapatalite

Reference List:
Williams, S. A. (1972) Zapatalite, a new mineral from Sonora, Mexico. Mineralogical Magazine: 38: 541-544.

American Mineralogist (1972): 57: 1911-1912.

Internet Links for Zapatalite

Localities for Zapatalite

map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
Australia
 
  • South Australia
    • Flinders Ranges
      • South Flinders Ranges
        • Wilmington
P. Elliott & U. Kolitsch (X-ray powder diffraction + SEM-EDS)
Austria
 
  • Tyrol
    • North Tyrol
      • Inn valley
        • Brixlegg - Schwaz area
Lapis 19(7/8):13-78 (1994)
Mexico
 
  • Sonora
Min Mag 38 (1972), 541;
    • Cerro Morita
[Min Mag 38 (1972), 541; Am. Min., 57, 1911-1912 (1972) ; MinRec 5:40]
Portugal
 
  • Évora District
    • Vila Viçosa
      • Conceição
Rewitzer, C. & Marques de Sá, J.P. (1998): Die Miguel Vacas Mine: Eine Kupferlagerstätte im Süden Portugals. Lapis 23(5), 13-23 Handbook of Mineralogy
USA
 
  • Nevada
    • Lander Co.
NBMG Spec Pub 31 Minerals of Nevada
      • Snowstorm Mountains District
Photos in mindat galleries. Material collected 2007 by Jim McGlasson.
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