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SAMPLE INFO : 91CNI20i
Sample ID:91CNI20i
Station ID:91CNI20
Latitude:59.99421
Longitude:-153.16787
Datum:NAD83
Date Sampled:1991-07-28
Sample Type 1:Lava
Sample Type 2:Enclave/Inclusion
 Text Description:
Basaltic andesite magmatic inclusion. Sparse phenocrysts of plagioclase. Microphenocrysts of plagioclase and pyroxene. Groundmass is dominantly crystalline and consists of 40 x 250 micro plagioclase laths, 150 micron diameter pyroxene, and subordinate clear glass. Irregular voids largely bounded by crystals are abundant. Opaque microcrystalline masses up to 1.4 mm long may be relict amphibole. One of several diverse lithologies collected from single location consisting of avalanche debris sitting on top of Umbrella Glacier at ~2200 foot elevation. Location implies these all came from Iliamna, central peak. "i" denotes fist-sized rounded blobs of macroscopically different magma enclosed in homogeneous host.

References:
Geochemistry of some Quaternary lavas from the Aleutian Arc and Mt. Wrangell

GEOCHEM DATA
StationIDLatitudeLongitudeGeologistDateVisitedAge InfoVolcanoEruptionLocation DescriptionText DescriptionSample IDSample Type 1Sample Type 2Final UnitMaterialSiO2TiO2Al2O3FeOTMnOMgOCaONa2OK2OP2O5Total-majorsREF majorsMETH majorsFe2O3/Fe203T origFeO/FeOT origVolatiles csvMETH volatilesCsRbBaSrLaCePrNdSmEuGdTbDyHoErTmYbLuYZrNbHfTaPbThUScVCrFeCoNiCuZnGaMoAsNaKRef trace1METH trace1RbBaSrLaCeNdSmEuGdDyErYbLuYZrNbPbThUScTiVCrNiCuZnGaRef trace2METH trace2Light csvHalogen csvother major csvother lile csvother ree csvother hfse csvother hpe csvother tm csvother misc csv
91CNI2059.99421-153.16787Nye, C. J.1991-07-28 IliamnaLatitude and longitude determined using Google Earth.Basaltic andesite magmatic inclusion. Sparse phenocrysts of plagioclase. Microphenocrysts of plagioclase and pyroxene. Groundmass is dominantly crystalline and consists of 40 x 250 micro plagioclase laths, 150 micron diameter pyroxene, and subordinate clear glass. Irregular voids largely bounded by crystals are abundant. Opaque microcrystalline masses up to 1.4 mm long may be relict amphibole. One of several diverse lithologies collected from single location consisting of avalanche debris sitting on top of Umbrella Glacier at ~2200 foot elevation. Location implies these all came from Iliamna, central peak. "i" denotes fist-sized rounded blobs of macroscopically different magma enclosed in homogeneous host. 91CNI20iLavaWhole-rock 52.16 0.773 18.67 0.147 6.17 11.57 2.65 0.525 0.081 101.0213291XRF7.26 0.79 9 163 403 17 6 1.68004 7.68975 2.28 0.84152 2.58626 0.47 3.04 0.64 1.75778 0.26 1.64 0.26 16 66 1.8 1.48637 0.06822 4 0 0.32562 34 265 63 21 0 72 20 13291ICPMS: Cs, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Hf, Ta, U; XRF: Rb, Ba, Sr, La, Ce, Y, Zr, Nb, Pb, Sc, V, Cr, Ni, Zn, Ga;

SAMPLE LOCATION

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