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Mineral Resources On-Line Spatial Data

Interactive maps > Data download > Geochemistry of igneous rocks from the PLUTO database

Alphabetical index of database fields

A

Age of the sample if known (Sample characteristics)
Aluminum oxide concentration (in percent by weight) (Chemical analysis)

C

Calcium oxide concentration (in percent by weight) (Chemical analysis)
Carbon dioxide concentration (in percent by weight) (Chemical analysis)

D

Date that the samples were submitted to the laboratory for analysis (written as YYYYMMDD) (Processing information)
Description of the sample material provided by the submitter, indicating any distinguishing characteristics. (Sample characteristics)

F

Ferric oxide concentration (in percent by weight) (Chemical analysis)
Ferrous oxide concentration (in percent by weight) (Chemical analysis)

G

General rock classification (Sample characteristics)

I

Indication of how typical sample is of an area and how it was collected (Sample characteristics)
Instrument or technique used to analyze sample (Processing information)

L

LABNO value concatenated with FIELD value (Sample identification)
Laboratory job number assigned by the analytical laboratory. A given job may have between 1 and 40 samples. (Processing information)
Laboratory sample number assigned by the analytical laboratory. (Sample identification)

M

Magnesium oxide concentration (in percent by weight) (Chemical analysis)
Manganese oxide concentration (in percent by weight) (Chemical analysis)
Mineralization noted by geologist in sample. This field is used to identify samples of ores and (or) related protore, altered material, or other samples of possible economic significance. (Sample characteristics)
Moisture (water lost from the sample on heating at 110 degrees centigrade) in percent by weight. (Chemical analysis)

N

Name of the individual who submitted the samples to the laboratory for analysis. (Processing information)

P

Phosphorus pentoxide concentration (in percent by weight) (Chemical analysis)
Potassium oxide concentration (in percent by weight) (Chemical analysis)

R

Relationship between quartz and feldspar in the rock (Sample characteristics)
Rock texture and structure (Sample characteristics)

S

Sample field number assigned by the submitter designated in the NAME field. (Sample identification)
Silicon dioxide concentration (in percent by weight) (Chemical analysis)
Sodium oxide concentration (in percent by weight) (Chemical analysis)
Sum of the weight percents of SIO2, AL2O3, MGO, CAO, NA2O, K2O, TIO2, P2O2, MNO, and FETO3 (Chemical analysis)

T

The county in which the sample was collected. (Geographic location)
The latitude of the sample location. (Geographic location)
The longitude of the sample location. By convention, longitudes west of Greenwich Meridian are negative. (Geographic location)
The name of the stratigraphic unit of formation rank or higher, represented by rock, mineral, or coal samples from the United States, Canada, or Mexico. (Sample characteristics)
The state (or location) in which the sample was collected. (Geographic location)
Titanium dioxide concentration (in percent by weight) (Chemical analysis)
Total iron concentration expressed as ferric oxide (in percent by weight) (Chemical analysis)
Type of rock formation from which sample was collected (Sample characteristics)
Type of source material or location (Sample characteristics)

U

Unique record identifier (Sample identification)

W

Water ("Essential" or "Bound" water) in percent by weight. Usually determined as the difference between total water and "moisture" (water lost from the sample on heating at 110 degrees centigrade). (Chemical analysis)

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Page Last modified: 11:56 on 18-Oct-2007