Major oxides | Weight % oxides | Weight % oxides | Weight % oxides |
---|---|---|---|
Lanzada metagabbro (XRF) | Lanzada metagabbro (anhydrous normalised) | Average of 1317 gabbros (anhydrous normalised) and std. deviations (Le Maitre 1976) | |
SiO2 | 45.24 | 46.24 | 51.06 ± 4.56 |
TiO2 | 1.03 | 1.05 | 1.17 ± 1.00 |
Al2O3 | 14.57 | 14.90 | 15.91 ± 3.66 |
Fe2O3 | 11.13 | 6.13 | 3.10 ± 2.15 |
FeO | – | 4.72 | 7.76 ± 3.06 |
MnO | 0.48 | 0.49 | – |
MgO | 4.57 | 4.67 | 7.68 ± 3.48 |
CaO | 17.74 | 18.13 | 9.88 ± 2.78 |
Na2O | 3.00 | 3.07 | 2.48 ± 1.17 |
K2O | 0.29 | 0.30 | 0.96 ± 0.85 |
P2O5 | 0.28 | 0.28 | – |
SO3 | 0.02 | 0.02 | – |
H2O | 0.68 | – | – |
Total | 99.04 | 100.00 | 100.00 |
Trace elements (ppm): Lanzada metagabbro | |||
 Sc | 7.8 | Sn | 8.6 |
 V | 153.0 | Sb | bd |
 Cr | 274.2 | Te | 27.0 |
 Co | 66.7 | I | bd |
 Ni | 185.5 | Cs | 4.6 |
 Cu | 60.6 | Ba | 54.9 |
 Zn | 77.5 | La | 55.0 |
 Ga | 22.6 | Ce | 103.1 |
 Ge | 2.9 | Nd | 41.1 |
 As | 5.7 | Sm | 8.8 |
 Se | bd | Yb | bd |
 Br | bd | Hf | 6.9 |
 Rb | 7.7 | Ta | bd |
 Sr | 489.3 | Hg | bd |
 Y | 45.6 | Tl | bd |
 Zr | 139.9 | Pb | 25.4 |
 Nb | 13.0 | Bi | bd |
 Mo | 0.9 | Th | 14.5 |
 Ag | bd | U | 5.3 |
 Cd | bd |  |  |
CIPW Weight Norm: Lanzada metagabbro | |||
 Plagioclase | 39.77 | Diopside | 30.32 |
  An | 25.53 |  Di | 25.65 |
  Ab | 14.24 |  Hd | 4.67 |
 Orthoclase | 1.77 | Wollastonite | 10.00 |
 Nepheline | 6.57 | Ilmenite | 1.99 |
 Na2SO4 | 0.04 | Magnetite | 8.89 |
 Apatite | 0.65 |  |  |