| Description |
|---|
| Material: | Not Provided |
| Classification: | Not Provided |
| Field Name: | Not Provided |
| Description: | This sample consists of numerous large black and black brown Mn oxide (pyrolucite or psilomelane) encrusted masses the size of cobbles and small boulders (ranging from 3 cm, 2 cm, 2 cm to large slabs 20 cm x 7 cm x 10 cm and boulders 15 cm x 10 cm x 15 cm ). Beanth the Mn oxide coating, they generally are made up of a sort of sedimentary breccia consisting of large well rounded cobbles and pebbles of volcanic rock, inclusions of orange to oragngeish tan colored, indurated lutite, and a groundmass consisting of avery compact to indurated lutite, rich in dark volcanic and numerous heavy minerals. The volcanic rock seems to be a very fine-grained (aphanitic), vitreous ultramafic lava or possibly a fine-grained vitrious feldspathoidal lava. The most significant characteristics of this lava are (1) very little (if any) feldspar is present. (2) the groundmass seems to have a fairly high % of dark brown to brown-black volcanic glass, (3) the texture is a very fine aphanitic one, (4) it has a high color index: 50+. |
| Age (min): | Not Provided |
| Age (max): | Not Provided |
| Collection Method: | Dredging |
| Collection Method Description: | Not Provided |
| Size: | Not Provided |
| Geological Age: | Not Provided |
| Geological Unit: | Not Provided |
| Comment: | Not Provided |
| Purpose: | Not Provided |
| Geolocation |
|---|
| Latitude Start (WGS84): | -18.8 |
| Latitude End: | Not Provided |
| Longitude Start (WGS84): | 78.15 |
| Longitude End: | Not Provided |
| Northing (m) (UTM NAD83): | Not Provided |
| Easting (m) (UTM NAD83): | Not Provided |
| Zone: | Not Provided |
| Vertical Datum: | Not Provided |
| Elevation Start: | -4934 meters |
| Elevation End: | Not Provided |
| Nav Type: | Not Provided |
| Physiographic Feature: | Rift valley in N.W. Australian Basin. |
| Name Of Physiographic Feature: | Not Provided |
| Location Description: | Not Provided |
| Locality: | Not Provided |
| Locality Description: | Not Provided |
| Country: | Not Provided |
| State/Province: | Not Provided |
| County: | Not Provided |
| City: | Not Provided |
| Collection |
|---|
| Field Program/Cruise: | VM0020 |
| Platform Type: | Ship |
| Platform Name: | Vema |
| Platform Description: | Not Provided |
| Launch Type: | Not Provided |
| Launch Platform Name: | Not Provided |
| Launch ID: | Not Provided |
| Collector/Chief Scientist: | Not Provided |
| Collector/Chief Scientist Detail: | Not Provided |
| Collection Start Date: | 1964-09-09 |
| Collection End Date: | Not Provided |
| Curation |
|---|
| Current Archive: | Lamont-Doherty Core Repository at Columbia University (LDCR) |
| Current Archive Contact Details: | Nichole Anest, peridote@ldeo.columbia.edu |
| Original Archive: | Not Provided |
| Original Archive Contact Details: | Not Provided |
| Related Samples |
|---|
Parents: | No Parents | | Siblings: | No Siblings |
| Children: | No Children |
