AGDB2 rock sample M178981

(metamorphic, meta-argillite)

Field Value
Lab ID M178981
Field ID 87RN284F
Job ID LV55
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 58.08194
Geographic longitude -134.63333
loc_desc 920 Adit Greens Ck VMS deposit area
Sample source mine/quarry
Collection method composite
Primary media type rock
Secondary media type metamorphic
Sample media name meta-argillite
Sample comment silic ARG; protolith silic shale
Additional sample attributes metasomatism unknown; quartz present; calcareous or dolomitic (marble)
Geologic age Devonian--Triassic
Stratigraphic unit Greens Ck mine ""argillite
Alteration type altered
Metamorphic setting shear
Metamorphic facies or grade greenschist
(click for info)
Geologic map unit -134.63333, 58.08194
Nearby scientific data Find additional scientific data near this location
Element Measured value Units of measure Analytical method
Chromium 30 parts per million by weight EDX
Nickel <20 parts per million by weight EDX
Rubidium 42 parts per million by weight EDX
Strontium 30 parts per million by weight EDX
Yttrium 26 parts per million by weight EDX
Zirconium 110 parts per million by weight EDX
Niobium 16 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 30 ppm XRF T EDXRF USGS-BGC
Nickel L20 ppm XRF T EDXRF USGS-BGC
Rubidium 42 ppm XRF T EDXRF USGS-BGC
Strontium 30 ppm XRF T EDXRF USGS-BGC
Yttrium 26 ppm XRF T EDXRF USGS-BGC
Zirconium 110 ppm XRF T EDXRF USGS-BGC
Niobium 16 ppm XRF T EDXRF USGS-BGC
Al2O3 14 pct XRF T LiBO2-Li2B4O7 fusion USGS-BGC
CaO 0.47 pct XRF T LiBO2-Li2B4O7 fusion USGS-BGC
FeO 2.6 pct TT T HF-H2SO4 USGS-BGC
FeTO3 4.82 pct XRF T LiBO2-Li2B4O7 fusion USGS-BGC
K2O 2.41 pct XRF T LiBO2-Li2B4O7 fusion USGS-BGC
LOI 4.2 pct GV T combustion USGS-BGC
MgO 1.43 pct XRF T LiBO2-Li2B4O7 fusion USGS-BGC
MnO 0.06 pct XRF T LiBO2-Li2B4O7 fusion USGS-BGC
Na2O 2.92 pct XRF T LiBO2-Li2B4O7 fusion USGS-BGC
P2O5 0.16 pct XRF T LiBO2-Li2B4O7 fusion USGS-BGC
SiO2 69.1 pct XRF T LiBO2-Li2B4O7 fusion USGS-BGC
TiO2 0.5 pct XRF T LiBO2-Li2B4O7 fusion USGS-BGC