AGDB2 rock sample M178993

(metamorphic, greenstone)

Field Value
Lab ID M178993
Field ID 87RN286D
Job ID LV56
Sample submitter Brew, David A.
Project name Juneau AMRAP
Date submitted 7/22/1987 0:00:00
Country United States
State AK
Map quadrangle Juneau
Geographic latitude 58.10278
Geographic longitude -134.66111
loc_desc Mariposite Ridge; Greens Ck VMS deposit area
Sample source outcrop
Collection method composite
Primary media type rock
Secondary media type metamorphic
Sample media name greenstone
Sample comment GST; protolith basalt
Additional sample attributes metasomatism unknown; quartz unknown; mafic (greenstone, greenschist, amphibolite)
Geologic age Devonian--Pliocene
Stratigraphic unit Greens Ck mine mafic tuff
Alteration type altered
Metamorphic setting regional
Metamorphic facies or grade greenschist
(click for info)
Geologic map unit -134.66111, 58.10278
Nearby scientific data Find additional scientific data near this location
Element Measured value Units of measure Analytical method
Chromium 140 parts per million by weight EDX
Nickel 76 parts per million by weight EDX
Rubidium <10 parts per million by weight EDX
Strontium 150 parts per million by weight EDX
Yttrium 48 parts per million by weight EDX
Zirconium 126 parts per million by weight EDX
Niobium 22 parts per million by weight EDX
Element Value Units Technique Digestion Decomposition Laboratory
Sulfur 0.068 pct XRF T LiBO2-Li2B4O7 fusion USGS-BGC
Sulfur 0.068 pct XRF T LiBO2-Li2B4O7 fusion USGS-BGC
Chromium 140 ppm XRF T EDXRF USGS-BGC
Nickel 76 ppm XRF T EDXRF USGS-BGC
Rubidium L10 ppm XRF T EDXRF USGS-BGC
Strontium 150 ppm XRF T EDXRF USGS-BGC
Yttrium 48 ppm XRF T EDXRF USGS-BGC
Zirconium 126 ppm XRF T EDXRF USGS-BGC
Niobium 22 ppm XRF T EDXRF USGS-BGC
Al2O3 14.5 pct XRF T LiBO2-Li2B4O7 fusion USGS-BGC
CaO 5.52 pct XRF T LiBO2-Li2B4O7 fusion USGS-BGC
FeO 10.8 pct TT T HF-H2SO4 USGS-BGC
FeTO3 14.2 pct XRF T LiBO2-Li2B4O7 fusion USGS-BGC
K2O L0.02 pct XRF T LiBO2-Li2B4O7 fusion USGS-BGC
LOI 3.91 pct GV T combustion USGS-BGC
MgO 7.97 pct XRF T LiBO2-Li2B4O7 fusion USGS-BGC
MnO 0.22 pct XRF T LiBO2-Li2B4O7 fusion USGS-BGC
Na2O 2.9 pct XRF T LiBO2-Li2B4O7 fusion USGS-BGC
P2O5 0.21 pct XRF T LiBO2-Li2B4O7 fusion USGS-BGC
SiO2 48.2 pct XRF T LiBO2-Li2B4O7 fusion USGS-BGC
TiO2 1.99 pct XRF T LiBO2-Li2B4O7 fusion USGS-BGC