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Geochemistry Laboratories

Analyses Performed

Requested Analysis

Most Common Sample Types (note if different)

Container Type

Amount of Sample

Comments

API Gravity

Oil

Glass

10 mg

 

EA_CHNS

Solid, Liquid, no ash

Glass

10 mg

 

EA_Oxygen

Solid, Liquid, no ash

Glass

10 mg

 

EA_Sulfur

Oil

Glass

10 mg

 

Fractionation

Oil or Rock Extract

Glass

100 mg

 

Gas_Comps

Natural Gas

Isotube or SS cylinder

50 - 250 psi

 

GCFID_Arom

Aromatic fraction

Glass

NA

 

GCFID_LightHC

Condensate

Glass

100 mg

 

GCFID_Sat

Saturate fraction

Glass

NA

 

GCFID_Whoil

Oil

Glass

10 mg

 

GCMS_BIOM

Oil or Rock Extract

Glass

50 mg

 

Isotope_C

Oil, oil fraction, solids

Glass for oil or oil fractions, various for solid samples

10 mg for oil and oil fractions, variable for solids

 

Isotope_C

Natural Gas

Isotube or SS cylinder

50 psi

>2 mol% of compound(s)

Isotope_HD

Natural Gas

Isotube or SS cylinder

50 psi

>10 mol% C1

Outside Lab analysis*

variable

variable

variable

call prior to submittal

Programmed Pyrolysis

solid

Variable

10 g

ground to ~60 mesh

Soxhlet_Extractjon

solid

Variable

50 - 500 g

amount depends on organic content

TC (Total Carbon)

solid

Variable

10 g

ground to ~60 mesh

TOC

solid

Variable

10 g

ground to ~60 mesh

VitRefl* (analyzed in Reston, not by EGL)

solid

Variable

approx. 25 g

 

XRD

solid

Variable

approx. 5 g

ground to ~60 mesh

*In-house method not available, samples sent to outside lab

Sample Submittal Procedure

Be sure sample names are clearly identified on samples before beginning. 

The login form is an excel spread sheet with macros that run the drop down list. 
Fill out login form (available for download below) with required information: submitter information, analysis requested (Must be English language), Field Id, Sample Type, Lat/Long Qualifier, Lat/Long, and units.  All other information, like depth, should be filled in where possible. 

Sample Login Form Ver. 2

Items with a drop down list must be selected from the list. 

Naming convention for file should be last name, underscore, and a unique identifer (Example: Smith_Anadarko1)

Send login form to energylabs@usgs.gov
Please send a packing list detailing the unique names for the samples in the  box with the samples.

Send samples to:
U.S. Geological Survey 
Attn: EGL
One Denver Federal Center
Building 810, Entrance E-11, MS 977
Denver, CO 80225

or if you are located on the DFC you can bring the samples to Bldg. 20, A-wing.

Once samples arrive they will be matched up and checked against the login form for accuracy.  If there are any discrepancies or questions you will be contacted before the samples are logged in. 

Confirmation of login will be sent to submitter via email. 

The submitter must verify all information is correct.  If it is not, send email to energylabs@usgs.gov with a detailed description of what is wrong.

Note:  All sample login questions and lab related questions need to be sent to energylabs@usgs.gov

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Page Last Modified: Tuesday, February 06, 2018