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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)
NOAA and MMS Marine Minerals Geochemical Database (NOAA-MMS)
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):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1 IdentificationIDKurnosov, Victor B
2 Sample code/labelSample labelKurnosov, Victor B
3 DEPTH, sediment/rockDepth sedmKurnosov, Victor BGeocode
4 Silicon dioxideSiO2%Kurnosov, Victor BElectron microprobe (EMP)
5 Titanium dioxideTiO2%Kurnosov, Victor BElectron microprobe (EMP)
6 Aluminium oxideAl2O3%Kurnosov, Victor BElectron microprobe (EMP)
7 Iron oxide, FeOFeO%Kurnosov, Victor BElectron microprobe (EMP)
8 Manganese oxideMnO%Kurnosov, Victor BElectron microprobe (EMP)
9 Magnesium oxideMgO%Kurnosov, Victor BElectron microprobe (EMP)
10 Calcium oxideCaO%Kurnosov, Victor BElectron microprobe (EMP)
11 Sodium oxideNa2O%Kurnosov, Victor BElectron microprobe (EMP)
12 Potassium oxideK2O%Kurnosov, Victor BElectron microprobe (EMP)
13 Deposit typeDeposit typeKurnosov, Victor B
14 PositionPositionKurnosov, Victor BVisual description
15 Substrate typeSubstrateKurnosov, Victor B
16 CommentCommentKurnosov, Victor B
17 DescriptionDescriptionKurnosov, Victor B
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
32 data points

Data

Download dataset as tab-delimited text — use the following character encoding:

1 
ID		2 
Sample label		3 
Depth sed [m]		4 
SiO2 [%]		5 
TiO2 [%]		6 
Al2O3 [%]		7 
FeO [%]		8 
MnO [%]		9 
MgO [%]		10 
CaO [%]		11 
Na2O [%]		12 
K2O [%]		13 
Deposit type		14 
Position		15 
Substrate		16 
Comment		17 
Description
68-501-10-2,10-12-1A68-501-10-2,10-12264.2133.290.036.960.0919.842.5319.060.020.01Mn coatingBuriedRock; basaltNannofossil limestone with chert over basalt (5Y 7/1-5G 6/1)Inside an unidentified mineral rich in Mn recovered from the basalt (Site 501, Core 10, Cored Interval: 264.1-267.1, page 69)
68-501-10-2,10-12-1B68-501-10-2,10-12264.2141.020.0112.162.854.1923.152.730.830.11Mn coatingBuriedRock; basaltNannofossil limestone with chert over basalt (5Y 7/1-5G 6/1)Outside rim of an unidentified mineral rich in Mn recovered from the basalt (Site 501, Core 10, Cored Interval: 264.1-267.1, page 69)