# Delta River Mining District--Data Release, 2003

Identification_Information
Data_Quality_Information
Spatial_Data_Organization_Information
Spatial_Reference_Information
Entity_and_Attribute_Information
Distribution_Information
Metadata_Reference_Information

## Identification Information

Section Index

Citation:

Citation Information:

Originator: Peter E. Bittenbender, Kirby W. Bean, Jeff L. Borhauer, Edward G. Gensler
Publication Date: 2003
Title: Delta River Mining District--Data Release, 2003
Publication Information:

Publication Place: Anchorage, AK
Publisher: U.S. Bureau of Land Management

Description:

Abstract:

This release contains a compilation of all samples collected by the BLM during 2001, 2002, and 2003 of the Delta River Mining District study. These data represent sample location and assay results for 960 rock, soil, stream sediment, pan concentrate, and placer samples. The analyses were performed by commercial laboratories contracted by the BLM.

Purpose:

The objective of the Delta River Mining District investigation is to evaluate the mineral resources and mineral development potential of the district.
The geochemical dataset is the compilation of the analytical results for the Delta
River Mining District study through September 2003.

Supplemental Information: Samples were collected during the field seasons of 2001 through 2003

Time Period of Content:

Time Period Information:

Single Date/Time:

Calendar Date: 2003

Currentness Reference: publication date

Status:

Progress: In Work
Maintenance and Update Frequency: As needed

Spatial Domain:

Bounding Coordinates:

West Bounding Coordinate: -147
East Bounding Coordinate: 144
North Bounding Coordinate: 65
South Bounding Coordinate: 62

Keywords:

Theme:

Theme Keyword Thesaurus: Report
Theme Keyword: minerals
Theme Keyword: mining district study
Theme Keyword: geochemical database
Theme Keyword: geochemistry
Theme Keyword: mineral assessment
Theme Keyword: central Alaska

Theme:

Theme Keyword Thesaurus: BLM-THEME
Theme Keyword: Minerals

Place:

Place Keyword Thesaurus: Location
Place Keyword: Alaska
Place Keyword: Central
Place Keyword: Delta River
Place Keyword: Interior

Place:

Place Keyword Thesaurus: BLM-STATE
Place Keyword: Alaska

Temporal:

Temporal Keyword Thesaurus: None
Temporal Keyword: 2001
Temporal Keyword: 2002
Temporal Keyword: 2003

Access Constraints: Discretionary, contains no sensitive information - generally considered releasable.
Use Constraints:

Any hardcopies or published datasets using these data should clearly indicate their source. Any users wishing to modify the data are obligated
to describe the types of modifications they have performed. User
specifically agrees not to misrepresent the data, nor to imply that changes
were approved or endorsed by the BLM. Any discrepancies or errors in this data should be reported to Earle_Williams@ak.blm.gov

Point of Contact:

Contact Information:

Contact Person Primary:

Contact Person: Earle Williams
Contact Organization: U.S. Bureau of Land Management

Contact Position: Program Manager
Contact Address:

Address Type: mailing and physical address
Address: 2222 W 7th Ave Ste 13
City: Anchorage
State or Province: Alaska
Postal Code: 99513
Country: U.S.A.

Contact Voice Telephone: 907-271-5762
Contact Electronic Mail Address: Earle_Williams@ak.blm.gov
Hours of Service: 0800-1630

Native Data Set Environment: Microsoft Access database
Cross Reference:

Citation Information:

Originator: Peter E. Bittenbender, Kirby W. Bean, and Edward G. Gensler
Publication Date: 2003
Title: Mineral Investigations in the Delta River Mining District, East-Central Alaska 2001-2002
Geospatial Data Presentation Form: map
Series Information:

Series Name: Open-File Report
Issue Identification: 91

Publication Information:

Publication Place: Anchorage, AK
Publisher: U.S. Bureau of Land Management

## Data Quality Information

Section Index

Attribute Accuracy:

Attribute Accuracy Report:

The samples in the dataset were analyzed by a variety of techniques. The accuracy and detection limits vary with each element and each method. When
appropriate, qualifiers are given to the data. Not all sample analyses that resulted in values above the upper detection limit for
a given analysis were re-analyzed by alternative test methods. Occasionally the
sample did not have sufficient volume for re-analysis or the sample collector decided
further analyses were not necessary.

Completeness Report:

This dataset provides chemical data for Au, Ag, Al, As, B, Ba, Bi, Ca, Cd, Ce, Co, Cr, Cu, Eu, Fe, Ga, Hg, Ho, Ir, K, La, Li, Mg, Mn, Mo, Na, Nb, Ni, Os, P, Pb, Pd, Pt, Re, Rh, Ru, S, Sb, Sc, Sn, Sr, Ta, Te, Th, Ti, Tl, U, V, W, Y, Yb, Zn, and, Zr. Not all samples contain results for every element. The sample submitter may have elected not to analyze for certain elements due to the geology of the sample area. Also, some samples were of limited volume.

Positional Accuracy:

Horizontal Positional Accuracy:

Horizontal Positional Accuracy Report:

Sample locations are specified in geographic coordinates - latitude and longitude. The values are stated in decimal degrees. Sample locations were determined from hand-held global positioning system (GPS) units. The accuracy depends on several factors, including the U.S. Department of Defense imposed Selective Availability and the position of the available satellites at the time of use. The accuracy ofthe GPS units with imposed SA is approximately 100 meters (328 feet). SA has been deactivated since May of 2000 so locations aquired after that date are generally accurate to 25 meters (82 feet). Also, the GPS units do not allow post-processing of the data. The maps and the GPS units use the 1927 North American Datum (NAD27) based on the Clarke 1866 ellipsoid.

Vertical Positional Accuracy:

Vertical Positional Accuracy Report: No vertical information is included in these data.

Lineage:

Source Information:

Source Citation:

Citation Information:

Originator: Bondar Clegg laboratories (2001), ALS USA Inc. (ALS Chemex) (2002,2003)
Publication Date: 2001-2003
Title: Geochemical Lab Report

Source Time Period of Content:

Time Period Information:

Range of Dates/Times:

Beginning Date: 2001
Ending Date: 2003

Source Currentness Reference: date of publication

Source Citation Abbreviation: Lab Reports
Source Contribution: Analytical results

Process Step:

Process Description:

Collection of samples in field. Samples locations were determined via GPS (Garmin GPS models 12, 12CX, and etrex). Occasionally locations were determined from maps when GPS signal quality was inadequate.

Process Date: 2001-2003
Process Contact:

Contact Information:

Contact Person Primary:

Contact Person: Kirby Bean
Contact Organization: Bureau of Land Management, Alaska

Contact Position: Geologist
Contact Address:

Address Type: physical and mailing
Address: 100 Savikko Rd
City: Douglas
State or Province: AK
Postal Code: 99824
Country: United States of America

Contact Voice Telephone: 907-364-1566
Contact Facsimile Telephone: 907-271-1574
Contact Electronic Mail Address: Kirby_Bean@ak.blm.gov
Hours of Service: 0800-1630

Process Step:

Process Description:

Submit samples for analyses. Samples were shipped from field locations to the selected laboratory. The analysis company underwent a buyout during the
mining district study. The change in company names are indicated below:
2001
Bondar Clegg
2002-2003
ALS USA Inc.

Process Date: 2001-2003
Process Contact:

Contact Information:

Contact Person Primary:

Contact Person: Kirby Bean
Contact Organization: Bureau of Land Management, Alaska

Contact Position: Geologist
Contact Address:

Address Type: physical and mailing
Address: 100 Savikko Rd
City: Douglas
State or Province: AK
Postal Code: 99824
Country: United States of America

Contact Voice Telephone: 907-364-1566
Contact Facsimile Telephone: 907-271-1574
Contact Electronic Mail Address: Kirby_Bean@ak.blm.gov
Hours of Service: 0800-1630

Process Step:

Process Description: Retrieve laboratory reports in electronic form in comma separated format.
Process Date: 2001-2003
Process Contact:

Contact Information:

Contact Person Primary:

Contact Person: Kirby Bean
Contact Organization: Bureau of Land Management, Alaska

Contact Position: Geologist
Contact Address:

Address Type: physical and mailing
Address: 100 Savikko Rd
City: Douglas
State or Province: AK
Postal Code: 99824
Country: United States of America

Contact Voice Telephone: 907-364-1566
Contact Facsimile Telephone: 907-271-1574
Contact Electronic Mail Address: Kirby_Bean@ak.blm.gov
Hours of Service: 0800-1630

Process Step:

Process Description: Compiled all analytical results and field notes into Microsoft Acess database.
Process Date: 2003
Process Contact:

Contact Information:

Contact Person Primary:

Contact Person: Kirby Bean
Contact Organization: Bureau of Land Management, Alaska

Contact Position: Geologist
Contact Address:

Address Type: physical and mailing
Address: 100 Savikko Rd
City: Douglas
State or Province: AK
Postal Code: 99824
Country: United States of America

Contact Voice Telephone: 907-364-1566
Contact Facsimile Telephone: 907-271-1574
Contact Electronic Mail Address: Kirby_Bean@ak.blm.gov
Hours of Service: 0800-1630

Cloud Cover: 0

## Spatial Data Organization Information

Section Index

Direct Spatial Reference Method: Point
Point and Vector Object Information:

SDTS Terms Description:

SDTS Point and Vector Object Type: Point
Point and Vector Object Count: 960

## Spatial Reference Information

Section Index

Horizontal Coordinate System Definition:

Geographic:

Latitude Resolution: 0.0001
Longitude Resolution: 0.0001
Geographic Coordinate Units: Decimal Degrees

Geodetic Model:

Horizontal Datum Name: North American Datum of 1927
Ellipsoid Name: Clarke 1866
Semi-major Axis: 6378206
Denominator of Flattening Ratio: 294.9786982

## Entity and Attribute Information

Section Index

Detailed Description:

Entity Type:

Entity Type Label: Field names for "raw" geochemistry data
Entity Type Definition: Geochemistry and locations of geologic samples collected in the Delta River Mining District area.
Entity Type Definition Source: U.S. Bureau of Land Management

Attribute:

Attribute Label: Element
Attribute Definition: Element analysed
Attribute Definition Source: Lab Reports
Attribute Domain Values:

Unrepresentable Domain: Typically atomic element, but may also include minerals.

Attribute:

Attribute Label: Lat
Attribute Definition: Latititude coordinates for the sample in decimal degrees using the NAD 1927 Alaska datum.
Attribute Definition Source: Global Positioning System
Attribute Domain Values:

Range Domain:

Range Domain Minimum: 62
Range Domain Maximum: 65
Attribute Units of Measure: decimal degrees
Attribute Measurement Resolution: 0.0001

Attribute:

Attribute Label: Long
Attribute Definition: Longitude coordinates for the sample in decimal degrees using the NAD 1927 Alaska datum.
Attribute Definition Source: Global Positioning System
Attribute Domain Values:

Range Domain:

Range Domain Minimum: -147
Range Domain Maximum: -144
Attribute Units of Measure: decimal degrees
Attribute Measurement Resolution: 0.0001

Attribute:

Attribute Label: Lower
Attribute Definition: Lower detection limit for the measurement technique
Attribute Definition Source: Lab Reports
Attribute Domain Values:

Unrepresentable Domain: Numeric value correlating with units of measure.

Attribute:

Attribute Label: Method
Attribute Definition: Analytical method used for the measurement.
Attribute Definition Source: Lab Reports
Attribute Domain Values:

Unrepresentable Domain: Dependent upon analyses required and lab equipment.

Attribute:

Attribute Label: Preparation
Attribute Definition: Type of preparation that preceded the analyses (i.e. partial or full digestion).
Attribute Definition Source: Lab Reports
Attribute Domain Values:

Unrepresentable Domain: Dependent upon analyses required and lab equipment.

Attribute:

Attribute Label: Sample No
Attribute Definition: Corresponds to sample numbers used in the written report.
Attribute Definition Source: Field Notes
Attribute Domain Values:

Unrepresentable Domain: Number assigned at time sample is collected.

Attribute:

Attribute Label: Unit
Attribute Definition: Unit of measure for the analysis.
Attribute Definition Source: Lab Reports
Attribute Domain Values:

Unrepresentable Domain: Dependent upon test method and equipment.

Attribute:

Attribute Label: Upper
Attribute Definition: Upper detection limit for the analysis technique.
Attribute Definition Source: Lab Reports
Attribute Domain Values:

Unrepresentable Domain: Numeric value correlating with units of measure.

Attribute:

Attribute Label: Value
Attribute Definition: Measured value for element. A negative symbol (-) denotes that a lower detection limit was reached.
Attribute Definition Source: Lab Reports
Attribute Domain Values:

Unrepresentable Domain: Numeric value representing quantity of element analyzed.

## Distribution Information

Section Index

Distributor:

Contact Information:

Contact Person Primary:

Contact Person: Jane Albrecht
Contact Organization: Juneau Mineral Information Center

Contact Address:

Address Type: Physical and mailing
Address: 100 Savikko Road, Mayflower Island
City: Juneau
State or Province: AK
Postal Code: 99824
Country: United States of America

Contact Voice Telephone: 907-364-1553
Contact Facsimile Telephone: 907-364-1574
Contact Electronic Mail Address: Jane_Albrecht@ak.blm.gov
Hours of Service: 0800-1630

Distribution Liability:

No warranty is made by the Bureau of Land Management as to the accuracy, reliability, or completeness of these data for individual use or
aggregate use with other data.

Standard Order Process:

Digital Form:

Digital Transfer Information:

Format Name: All formats, compressed archive
File Decompression Technique:

Compressed in ZIP format. Decompression utilities can be downloaded from: http://www.pkzip.com
http://www.winzip.com

Digital Transfer Option:

Online Option:

Computer Contact Information:

Network Address:

Network Resource Name: http://juneau.ak.blm.gov/data/geochem2003.zip

Fees: free
Ordering Instructions:

"raw" data available in digital form only available online at http://juneau.ak.blm.gov/

Technical Prerequisites: Digital data tables can be accessed with a text reader, spreadsheet, or database program.
Available Time Period:

Time Period Information:

Single Date/Time:

Calendar Date: 2003

## Metadata Reference Information

Section Index

Metadata Date: 9/10/2003
Metadata Review Date: 10/21/2003
Metadata Future Review Date:
Metadata Contact:

Contact Information:

Contact Person Primary:

Contact Person: Kirby Bean
Contact Organization: Bureau of Land Management, Alaska

Contact Position: Geologist
Contact Address:

Address Type: physical and mailing
Address: 100 Savikko Rd
City: Douglas
State or Province: AK
Postal Code: 99824
Country: United States of America

Contact Voice Telephone: 907-364-1566
Contact Facsimile Telephone: 907-271-1574
Contact Electronic Mail Address: Kirby_Bean@ak.blm.gov
Hours of Service: 0800-1630

Metadata Standard Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata Standard Version: FGDC-STD-001-1998

SMMS Metadata report generated 10/21/2003