AGDB2 rock sample M178980

(metamorphic, meta-argillite)

Field Value
Lab ID M178980
Field ID 87RN284B
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 calcareous argillite; protolith calc mudst
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
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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 124 parts per million by weight EDX
Nickel <20 parts per million by weight EDX
Rubidium 14 parts per million by weight EDX
Strontium 126 parts per million by weight EDX
Yttrium 26 parts per million by weight EDX
Zirconium 74 parts per million by weight EDX
Niobium 10 parts per million by weight EDX
Element Value Units Technique Digestion Decomposition Laboratory
Sulfur 0.58 pct XRF T LiBO2-Li2B4O7 fusion USGS-BGC
Sulfur 0.58 pct XRF T LiBO2-Li2B4O7 fusion USGS-BGC
Chromium 124 ppm XRF T EDXRF USGS-BGC
Nickel L20 ppm XRF T EDXRF USGS-BGC
Rubidium 14 ppm XRF T EDXRF USGS-BGC
Strontium 126 ppm XRF T EDXRF USGS-BGC
Yttrium 26 ppm XRF T EDXRF USGS-BGC
Zirconium 74 ppm XRF T EDXRF USGS-BGC
Niobium 10 ppm XRF T EDXRF USGS-BGC
Al2O3 5.35 pct XRF T LiBO2-Li2B4O7 fusion USGS-BGC
CaO 14.2 pct XRF T LiBO2-Li2B4O7 fusion USGS-BGC
FeO 0.81 pct TT T HF-H2SO4 USGS-BGC
FeTO3 2.04 pct XRF T LiBO2-Li2B4O7 fusion USGS-BGC
K2O 0.61 pct XRF T LiBO2-Li2B4O7 fusion USGS-BGC
LOI 17.1 pct GV T combustion USGS-BGC
MgO 6.1 pct XRF T LiBO2-Li2B4O7 fusion USGS-BGC
MnO 0.08 pct XRF T LiBO2-Li2B4O7 fusion USGS-BGC
Na2O 0.59 pct XRF T LiBO2-Li2B4O7 fusion USGS-BGC
P2O5 0.06 pct XRF T LiBO2-Li2B4O7 fusion USGS-BGC
SiO2 51.3 pct XRF T LiBO2-Li2B4O7 fusion USGS-BGC
TiO2 0.26 pct XRF T LiBO2-Li2B4O7 fusion USGS-BGC