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LCZO -- Soil Mineralogy -- Mineral content of soils 0-20 cm XRD -- Northeastern Puerto Rico -- (2010-2011)


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Abstract

Mineralogy of Soils Overlying the Two Main Geologic Provinces of the El Yunque National Forest, Puerto Rico

A total of twenty 0-20cm soil samples from the El Yunque National Forest, Puerto Rico, have been analyzed using XRD analysis to determine their mineral content. Qualitative and quantitative analysis of the data show that all the samples contain quartz, orthoclase, kaolinite, dickite, halloysite and nicrite, gibbsite, augelite, metavariscite, goethite, tsaregorodtsevite, apophylite. Soil sample from Oxisols sites contain higher percentage of clay minerals than the samples from Dystrudepts sites. Furthermore, the general pattern of the percentage of total clays, feldspars, and gibbsite within each and between transects suggest that soils in the valleys are more weathered and leached than soils from ridges. The percentage increase of phosphate minerals in the soils follow that of clay minerals which is most probably due to the attachment of the phosphate minerals to clay mineral surfaces. The presence of the organic cation Tetramethylammonium in the cavities between the oxygen-silicon tetrahedra of the tsaregorodtsevite structure (feldsphoid-zeolitic structure) is consistent with a low energy mechanism for the sequestration of carbon and nitrogen in the EYNF soils.

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Resource Level Coverage

Spatial

Coordinate System/Geographic Projection:
WGS 84 EPSG:4326
Coordinate Units:
Decimal degrees
Place/Area Name:
Northeastern Puerto Rico and the Luquillo Mountains, Northeastern Puerto Rico
North Latitude
18.3223°
East Longitude
-65.7407°
South Latitude
18.2614°
West Longitude
-65.8569°

Temporal

Start Date:
End Date:

Content

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LCZO -- Soil Mineralogy -- Mineral content of soils 0-20 cm XRD -- Northeastern Puerto Rico -- (2010-2011)


OVERVIEW

Description/Abstract

Mineralogy of Soils Overlying the Two Main Geologic Provinces of the El Yunque National Forest, Puerto Rico

A total of twenty 0-20cm soil samples from the El Yunque National Forest, Puerto Rico, have been analyzed using XRD analysis to determine their mineral content. Qualitative and quantitative analysis of the data show that all the samples contain quartz, orthoclase, kaolinite, dickite, halloysite and nicrite, gibbsite, augelite, metavariscite, goethite, tsaregorodtsevite, apophylite. Soil sample from Oxisols sites contain higher percentage of clay minerals than the samples from Dystrudepts sites. Furthermore, the general pattern of the percentage of total clays, feldspars, and gibbsite within each and between transects suggest that soils in the valleys are more weathered and leached than soils from ridges. The percentage increase of phosphate minerals in the soils follow that of clay minerals which is most probably due to the attachment of the phosphate minerals to clay mineral surfaces. The presence of the organic cation Tetramethylammonium in the cavities between the oxygen-silicon tetrahedra of the tsaregorodtsevite structure (feldsphoid-zeolitic structure) is consistent with a low energy mechanism for the sequestration of carbon and nitrogen in the EYNF soils.

Creator/Author

Zhuo Wang

CZOs

Luquillo

Contact

Miguel Leon, Miguel.Leon@unh.edu




SUBJECTS

Disciplines

Geochemistry / Mineralogy

Topics

Soil Mineralogy

Subtopic

Mineral content of soils 0-20 cm XRD

Keywords

Soil Mineralogy|XRD|X-Ray Diffraction

Variables

Apophylite| Augelite| Metavariscite| Gibbsite| Goethite| Orthhoclase| Albite| Dickite| Haolloysite| Kaolinite| Nacrite| Quartz| Tsargorodtsevite| Vermiculite| Melanovanadite|

Variables ODM2

Albite|Apophyllite|Augelite|Clay|Gibbsite|Goethite|Halloysite|Nacrite|Orthoclase|Quartz|Vermiculite




TEMPORAL

Date Start

2010-05-15

Date End

2011-05-20




SPATIAL

Field Areas

Northeastern Puerto Rico and the Luquillo Mountains

Location

Northeastern Puerto Rico

North latitude

18.32232903

South latitude

18.26143335

West longitude

-65.85692813

East longitude

-65.74067507




REFERENCE

Citation

Wang Z., Mineralogy of Soils Overlying the Two Main Geologic Provinces of the El Yunque National Forest, Puerto Rico. A Master Thesis. University of Pennsylvania, 2011.

CZO ID

5531



Additional Metadata

Name Value
czos Luquillo
czo_id 5531
citation Wang Z., Mineralogy of Soils Overlying the Two Main Geologic Provinces of the El Yunque National Forest, Puerto Rico. A Master Thesis. University of Pennsylvania, 2011.
keywords Soil Mineralogy, XRD, X-Ray Diffraction
variables Apophylite, Augelite, Metavariscite, Gibbsite, Goethite, Orthhoclase, Albite, Dickite, Haolloysite, Kaolinite, Nacrite, Quartz, Tsargorodtsevite, Vermiculite, Melanovanadite,
disciplines Geochemistry / Mineralogy

How to Cite

Wang, Z. (2019). LCZO -- Soil Mineralogy -- Mineral content of soils 0-20 cm XRD -- Northeastern Puerto Rico -- (2010-2011), HydroShare, http://www.hydroshare.org/resource/e093b98a554c4ffa80786f3b608de00c

This resource is shared under the Creative Commons Attribution CC BY.

 http://creativecommons.org/licenses/by/4.0/
CC-BY

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