Kurnosov, Victor B; Kholodkevich, Igor V; Chubarov, Valerii M; Shevchenko, Alla Ya (1983): (Table 6, page 577) Chemical composition of Mn-rich mineral deposit from basalt of Costa Rica Rift, Site 501, DSDP Leg 68 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.816458, In supplement to: Kurnosov, VB et al. (1983): Secondary minerals in basalt from the Costa Rica Rift, Holes 501 and 504B, Deep Sea Drilling Project Legs 68, 69, and 70. In: Cann, JR; Langseth, MG; Honnorez, J; Von Herzen, RP; White, SM; et al. (eds.), Initial Reports of the Deep Sea Drilling Project (U.S. Govt. Printing Office), 69, 573-583, https://doi.org/10.2973/dsdp.proc.69.130.1983
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Abstract:
Basalt samples recovered during DSDP Legs 68, 69, and 70 from a 550-meter-thick section in two holes near the Costa Rica Rift (Holes 501 and 504B) were found to contain the following secondary minerals: trioctahedral and dioctahedral smectite, chlorite, mixed-layer clays, talc, hematite, pyrite, foujasite, phillipsite, analcime, natrolite, thomsonite, gyrolite, aragonite, calcite, anhydrite, chalcocite, Fe-hydrosilicate, okenite, apophyllite, actinolite, cristobalite, quartz, and magnesite. A less positive identification of bismutite was made. A mineral rich in Mn and minerals with strong reflections at 12.9 Å and 3.20 Å remain unidentified. Trioctahedral smectite replaces glass and olivine in the basalt groundmass. The other secondary minerals occur in veins. The distribution of the secondary minerals in the basalt section shows both hydrothermal and oxidizing-nonoxidizing zonation. Most of the secondary minerals formed under alkaline, nonoxidizing conditions at temperatures up to 120° C. An acidic regime probably existed in the lowest portion of basalt. Oxidative diagenesis followed nonoxidative diagenesis in the upper part of the section. Oxidative diagenesis is characterized by the absence of celadonite, rare occurrences of dioctahedral smectite, and widespread hematite and phillipsite.
Source:
Grant, John Bruce; Moore, Carla J; Alameddin, George; Chen, Kuiying; Barton, Mark (1992): The NOAA and MMS Marine Minerals Geochemical Database. National Geophysical Data Center, NOAA, https://doi.org/10.7289/V52Z13FT
Further details:
Warnken, Robin R; Virden, William T; Moore, Carla J (1992): The NOAA and MMS Marine Minerals Bibliography. National Geophysical Data Center, NOAA, https://doi.org/10.7289/V53X84KN
Project(s):
Deep Sea Drilling Project (DSDP)
Coverage:
Latitude: 1.227200 * Longitude: -83.734300
Date/Time Start: 1979-07-08T00:00:00 * Date/Time End: 1979-07-08T00:00:00
Minimum DEPTH, sediment/rock: 264.21 m * Maximum DEPTH, sediment/rock: 264.21 m
Event(s):
68-501 * Latitude: 1.227200 * Longitude: -83.734300 * Date/Time: 1979-07-08T00:00:00 * Elevation: -3457.0 m * Penetration: 337.1 m * Recovery: 70.5 m * Location: North Pacific/FLANK * Campaign: Leg68 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 19 cores; 137.7 m cored; 0.5 m drilled; 51.2 % recovery
Comment:
From 1983 until 1989 NOAA-NCEI compiled the NOAA-MMS Marine Minerals Geochemical Database from journal articles, technical reports and unpublished sources from other institutions. At the time it was the most extended data compilation on ferromanganese deposits world wide. Initially published in a proprietary format incompatible with present day standards it was jointly decided by AWI and NOAA to transcribe this legacy data into PANGAEA. This transfer is augmented by a careful checking of the original sources when available and the encoding of ancillary information (sample description, method of analysis...) not present in the NOAA-MMS database.
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Identification | ID | Kurnosov, Victor B | |||
| 2 | Sample code/label | Sample label | Kurnosov, Victor B | |||
| 3 | DEPTH, sediment/rock | Depth sed | m | Kurnosov, Victor B | Geocode | |
| 4 | Silicon dioxide | SiO2 | % | Kurnosov, Victor B | Electron microprobe (EMP) | |
| 5 | Titanium dioxide | TiO2 | % | Kurnosov, Victor B | Electron microprobe (EMP) | |
| 6 | Aluminium oxide | Al2O3 | % | Kurnosov, Victor B | Electron microprobe (EMP) | |
| 7 | Iron oxide, FeO | FeO | % | Kurnosov, Victor B | Electron microprobe (EMP) | |
| 8 | Manganese oxide | MnO | % | Kurnosov, Victor B | Electron microprobe (EMP) | |
| 9 | Magnesium oxide | MgO | % | Kurnosov, Victor B | Electron microprobe (EMP) | |
| 10 | Calcium oxide | CaO | % | Kurnosov, Victor B | Electron microprobe (EMP) | |
| 11 | Sodium oxide | Na2O | % | Kurnosov, Victor B | Electron microprobe (EMP) | |
| 12 | Potassium oxide | K2O | % | Kurnosov, Victor B | Electron microprobe (EMP) | |
| 13 | Deposit type | Deposit type | Kurnosov, Victor B | |||
| 14 | Position | Position | Kurnosov, Victor B | Visual description | ||
| 15 | Substrate type | Substrate | Kurnosov, Victor B | |||
| 16 | Comment | Comment | Kurnosov, Victor B | |||
| 17 | Description | Description | Kurnosov, Victor B |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
32 data points