GEOROC Sample Information

Location
Latitude 4.895 | Longitude -75.323
ANDEAN ARC / NORTHERN ANDEAN VOLCANIC ZONE / COLOMBIA / NEVADO DEL RUIZ
CONVERGENT MARGIN

Reference

SIGURDSSON H.,DEVINE J. D.,CAREY S. N.,PALAIS J. M.

PRE-ERUPTION COMPOSITIONAL GRADIENTS AND MIXING OF ANDESITE AND DACITE MAGMA ERUPTED FROM NEVADO DEL RUIZ VOLCANO, COLOMBIA IN 1985

J. VOLCANOL. GEOTHERM. RES. 41 [1990] 127-151

Sample Name: COL-26A

Sample Information

ANDESITE / PUMICE
OUTCROP

Sample Age Information

11/13/1985 eruption

Chemistry (and, if given, analytical ages)

Analyzed: WHOLE ROCK

AL2O315.83 WT%
CAO6.06 WT%
FEOT5.57 WT%
K2O2.05 WT%
MGO4.76 WT%
MNO0.1 WT%
NA2O3.47 WT%
P2O50.19 WT%
SIO261.27 WT%
TIO20.68 WT%
CE42 PPM
LA14 PPM
BA1055 PPM
CU44 PPM
NB6 PPM
NI75 PPM
RB61 PPM
SR539 PPM
Y12 PPM
ZN64 PPM
ZR121 PPM

Analyzed: MINERAL / COMPONENT (INCL. GROUNDMASS) GLASS

AL2O313.6 ± 0.38 WT%
CAO1.22 ± 0.25 WT%
FEOT1.82 ± 0.15 WT%
K2O4.96 ± 0.33 WT%
MGO0.36 ± 0.03 WT%
MNO0.01 ± 0.01 WT%
NA2O5.33 ± 1.03 WT%
P2O50.03 ± 0.06 WT%
SIO271.94 ± 1.51 WT%
TIO20.73 ± 0.04 WT%