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Rocky 7 - Mojave Desert Field ExperimentsSamples |
Field samples were collected from Lavic Lake, the site of the May 1997 Rocky 7 field test, and Silver Lake, a proposed site for a spring 1998 Rocky 7 field test. These samples help to document the field test environment which Rocky 7 explores. Laboratory analyses are an integral part of cataloging the samples. Techniques such as Mössbauer and Raman spectroscopy will be conducted to better characterize the chemical properties of the specimens. During field exercises, rocks which have been analyzed by Rocky 7 are collected to undergo further laboratory analysis. Results are posted on this Web page. Below is a table listing each sample with its collection locality, date of acquisition and a brief description of the sample characteristics. Click on the highlighted links to display top and bottom views of each sample.
| Sample Name | Site | Acquisition Date | Site Latitude, Longitude | Collector | Description/ Notes |
| L121996A (top) | Lavic | 12/19/96 | Arvidson | brownish grey clay playa material from Lavic Lake; silt to cobble size | |
| L121996B (top, bottom) | Lavic | 12/19/96 | Arvidson | 21 cm x 9 cm x 3 cm dacite porphyry with dark greasy desert varnish on top and red oxide coating on underside [updated 10/23/97] | |
| L121996C (top, bottom) | Lavic | 12/19/96 | ~34d 40' 9.72"N,
~116d 21' 51.97" W | Arvidson | 8 cm x 6 cm x 4 cm monzonite/andesite with feldspar phenocrysts (1 - 4 mm.) and hornblende laths in a pinkish matrix; top unvarnished, red oxide coating on top; elongate voids where crystals have been weathered; collected on alluvial fan: |
| L121996D (top, bottom) | Lavic | 12/19/96 | ~34d 40' 9.72"N,
~116d 21' 51.97" W | Arvidson | 9 cm x 6 cm x 4 cm mafic rock (monzonite/andesite) with feldspar (< 5 mm.) and quartz phenocrysts in a pinkish mafic matrix; collected on alluvial fan; |
| L121996E (top, bottom) | Lavic | 12/19/96 | ~34d 40' 9.72"N,
~116d 21' 51.97" W | Arvidson | 13 cm x 4 cm x 3 cm igneous rock; quartz monzonite; dominantly composed of feldspar crysals with quartz; chlorite weathering product of feldspar on underside; collected on alluvial fan |
| L121996F (top, bottom) | Lavic | 12/19/96 | ~34d 40' 9.72"N,
~116d 21' 51.97" W | Arvidson | fine grained rhyodacite or baked silisiclastic rock; brownish grey with vesicular-like feature; collected on alluvial fan |
| L121996G (top, bottom) | Lavic | 12/19/96 | ~34d 40' 9.72"N,
~116d 21' 51.97" W | Arvidson | fine grained rhyodacite or baked silisiclastic rock; brownish grey with vesicular-like feature; collected on alluvial fan |
| L060096H (top, bottom) | Lavic | 6/96 | 34d 40.4324' N,
116d 20.4352' W | Eby | 9.5 cm x 6.5 cm x 6 cm young basalt cobble found on playa; vesicles filled with playa silt on top and underside is coated with playa silt |
| L060096I (top, bottom) | Lavic | 6/96 | 34d 40.5357' N,
116d 19.3416' W | Eby | 6 cm x 5 cm x 4 cm young basalt cobble found on playa; vesicles filled with playa silt on top and underside is partially coated with playa silt |
| L060096J (top, bottom) | Lavic | 6/96 | 34d 40.5357' N,
116d 19.3416' W | Eby | 6.5 cm x 4.5 cm x 3 cm young basalt cobble found on playa; vesicles filled with playa silt on top and underside is partially coated with playa silt |
| L060096K (top, bottom) | Lavic | 6/96 | 34d 40.5357' N,
116d 19.3416' W | Eby | 8 cm x 5.5 cm x 3 cm young basalt cobble found on playa; vesicles filled with thick accumulations of playa silt on top and underside is partially coated with playa silt |
| L060096L (top, bottom) | Lavic | 6/96 | ~34d 40.931' N,
~116d 19.5999' W | Eby | 5.5 cm x 5 cm x 2 cm vesicular basalt cobble with dark greasy varnish on top and playa silt on bottom. |
| L060096M (top, bottom) | Lavic | 6/96 | ~34d 40.931' N,
~116d 19.5999' W | Eby | 8 cm x 4 cm x 2.5 cm vesicular basalt cobble with dark greasy varnish on top and red oxide coating on bottom; some vesicles filled with playa silt |
| L060096N (top, bottom) | Lavic | 6/96 | ~34d 40.931' N,
~116d 19.5999' W | Eby | 5 cm x 4.5 cm x 1.5 cm basalt cobble with thick red oxide coating on bottom; some aeolian silt on speciman; dark greasy varnish on side. |
| SL030097O (top, bottom) | Silver Lake | 3/7/97 | 35d 21' 4" N,
116d 8' 54" W | Niebur | 9.5 cm x 7.5 cm x 4.5 cm carbonate cemented lithic fragments from each erosion of cemented alluvial fan; top has dissolution pits; cobble of limestone on bottom |
| SL030097P (top, bottom) | Silver Lake | 3/7/97 | 35d 21' 4" N,
116d 8' 54" W | Niebur | 11 cm x 6.5 cm x 3.5 cm carbonate cemented lithic pebbles from beach erosion of cemented alluvial fan; top has dissolution pits; pebbles are assorted lithologies |
