Middle Flat Diatomite Deposit

Past Producer in New South Wales, Australia with commodity Diatomite

Sections on this page

Identification information
Geographic coordinates
Site location context
Geographic areas
Commodities
Materials information
Mineral occurrence model information
Host and associated rocks
Nearby scientific data
Ore body information
Economic information about the deposit and operations
Mining district
Ownership information
Links to other databases
Bibliographic references
General comments
Reporter information

Geologic information

Identification information

Deposit ID	10023631
MRDS ID	I001008
Record type	Site
Current site name	Middle Flat Diatomite Deposit

Geographic coordinates

Geographic coordinates:	149.17713, -36.17343 (WGS84)
Elevation	800
Location accuracy	100(meters)
Relative position	8 KM NORTHEAST OF COOMA.

Site location context

Political divisions (FIPS codes)

New South Wales(province)

Australia(country)

Australia(continent)

Land(continent)

Geographic areas

Country	State
Australia	New South Wales

Commodities

Commodity	Importance
Diatomite	Primary

Comments on the commodity information

DOMINANT DIATOMS ARE "MELOSIRA GRANULATA" AND "GOMPHONEMA INTRICATUM".

Materials information

Materials	Type of material
Diatomite	Ore
Kaolinite	Gangue
Quartz	Gangue

Analytical data

Result	56-56.5% SIO2
Result	17.4-20.5% AL2O3. FREE QUARTZ 1->1% BE WEIGHT.

Mineral occurrence model information

Model code	222
USGS model code	31s
Deposit model name	Lacustrine diatomite

Host and associated rocks

Host or associated Host

Rock type Unconsolidated Deposit > Clay, Mud

Host or associated	Host
Rock type	Sedimentary Rock > Clastic Sedimentary Rock > Lake Sediments
Rock unit name	Bonnie Doon Member;Bunyan Formation
Rock description	Bonnie Doon Member;Bunyan Formation

Host or associated Host

Rock type Sedimentary Rock > Diatomite

Nearby scientific data

(1)	149.17713, -36.17343	ListMap

Economic information

Ore body information

General form STRATIFORM

General form	STRATIFORM

Comments on the geologic information

UNLIKE OTHER DIATOMITE DEPOSITS IN NEW SOUTH WALES, THERE IS NO STRONG CORRELATION OF THIS DEPOSIT WITH VOLCANISM.

Economic information about the deposit and operations

Development status	Past Producer
Commodity type	Non-metallic
Significant	No
Year of first production	1907
Year of last production	1980

Mining district

District name	Cooma Area

Ownership information

Type Owner

Owner New South Wales Clay Mining Co. Pty. Ltd. (-

Last year 1982

Type	Owner
Owner	New South Wales Clay Mining Co. Pty. Ltd. (-
Last year	1982

Comments on the production information

THERE WAS NO PRODUCTION BETWEEN 1967 AND 1980 AND NONE AFTER 1980 (AS OF 1989).

Reference information

Links to other databases

Agency	Database name	Acronym	Record ID	Notes
USGS	Mineral Resources Data System	MRDS	I001008

Bibliographic references

Deposit

HOLMES, G.G., STANLEY, C., AND SWEENEY, V., 1989, DIATOMITE IN NEW SOUTH WALES: GEOLOGICAL SURVEY OF NEW SOUTH WALES MINERAL RESOURCES 46, 161 P
Production

HOLMES AND OTHERS, 1989.

General comments

Subject category	Comment text
Deposit	DIATOMITE OVERLIES UP TO 9 M OF MULTI-COLORED CLAY AND IS OVERLAIN BY BASALTIC SOIL WITH LARGE ANGULAR QUARTZ FRAGMENTS AND CLAY. IMPURE DIATOMITE (UP TO 6 M THICK) DIRECTLY OVERLIES THE CLAY. THE IMPURE DIATOMITE IS OVERLAIN BY UP TO 5.5 M OF WHITE AND LIGHT-BROWN DIATOMITE. THE DIATOMITE SEQUENCE IS UP TO 13 M THICK AND DIPS GENTLY (0-5 DEG) EAST. THE DIATOMITE IS WELL-LAMINATED TO MASSIVE WITH CLAY PARTINGS AND ORGANIC RESIDUES ASSOCIATED WITH ZONES OF BRECCIATION. SPONGE SPICULES ARE COMMON IN PARTS OF THE DEPOSIT. THE DEPOSIT IS PART OF CENOZOIC LAKE BUNYAN DEPOSITS WHICH EXTEND FROM BREDBO 30 KM SOUTHEAST TO COOMA. THE DIATOMITE DEPOSITS ARE IN THE UPPERMOST PART OF THESE SEDIMENTS AND ARE RESTRICTED TO A SMALL EMBAYMENT IN MIDDLE FLAT CREEK VALLEY.

Subject category

Comment text

Deposit

DIATOMITE OVERLIES UP TO 9 M OF MULTI-COLORED CLAY AND IS OVERLAIN BY BASALTIC SOIL WITH LARGE ANGULAR QUARTZ FRAGMENTS AND CLAY. IMPURE DIATOMITE (UP TO 6 M THICK) DIRECTLY OVERLIES THE CLAY. THE IMPURE DIATOMITE IS OVERLAIN BY UP TO 5.5 M OF WHITE AND LIGHT-BROWN DIATOMITE. THE DIATOMITE SEQUENCE IS UP TO 13 M THICK AND DIPS GENTLY (0-5 DEG) EAST. THE DIATOMITE IS WELL-LAMINATED TO MASSIVE WITH CLAY PARTINGS AND ORGANIC RESIDUES ASSOCIATED WITH ZONES OF BRECCIATION. SPONGE SPICULES ARE COMMON IN PARTS OF THE DEPOSIT. THE DEPOSIT IS PART OF CENOZOIC LAKE BUNYAN DEPOSITS WHICH EXTEND FROM BREDBO 30 KM SOUTHEAST TO COOMA. THE DIATOMITE DEPOSITS ARE IN THE UPPERMOST PART OF THESE SEDIMENTS AND ARE RESTRICTED TO A SMALL EMBAYMENT IN MIDDLE FLAT CREEK VALLEY.

Reporter information

Type	Date	Name	Affiliation	Comment
Reporter	01-AUG-91	Orris, Greta J.	U.S. Geological Survey

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.