Dataset
Data Publication
Colombian emeralds – internal and external growth and dissolution features
Franz, Gerhard | Schiperski, Ferry | Khomenko, Vladimir | Gernert, Ulrich | Nissen, Jörg
GFZ Data Services
(2025)
Descriptions
Emeralds from Colombia are among the most highly-prized and valuable gemstones. Their growth phenomena including information about the geology of the area were described in detail by Pig-natelli et al. (2015, 2022) and Schmetzer and Martayan (2023). Here, we present data obtained by scanning electron microscopy (SEM), electron microprobe analysis (EMPA), and infrared absorption spectroscopy (IR) for five emerald crystals. The surface of the crystals shows both, growth phe-nomena as well as dissolution phenomena, the latter as etch pits (EP). Such EP have been used previously for other beryl types, mainly from pegmatitic environments (Kurumathoor and Franz, 2018); the Colombian emeralds come from low-grade metamorphosed black shales and thus offer the possibility to extend the use of EP as a provenance indicator to other types of beryl deposits. Internal structures are manifested in chemical zoning, investigated by EMPA and micro-X-ray fluo-rescence (µXRF). The crystals are characterized chemically by EMPA, polarized IR spectroscopy of oriented crystals showed the presence of fluids in the channels of the beryl structure.
Keywords
MSL enriched keywords
sedimentary rock
mudstone
shale
igneous rock - intrusive
acidic intrusive
pegmatite
minerals
silicate minerals
cyclosilicates
beryl
equipment
electron probe micro-analyzer
x-ray spectrometer
x-ray fluorescence spectrometer
Apparatus
microchemical analysis
electron probe micro analyser
electron microscopy
Originally assigned keywords
EMPA
micro-X-ray fluorescence
SEM
IR spectroscopy
emeralds
EARTH SCIENCE > SOLID EARTH > GEOCHEMISTRY
EARTH SCIENCE > SOLID EARTH > ROCKS/MINERALS/CRYSTALS > METAMORPHIC ROCKS
EARTH SCIENCE > SOLID EARTH > ROCKS/MINERALS/CRYSTALS > METAMORPHIC ROCKS > METAMORPHIC ROCK PHYSICAL/OPTICAL PROPERTIES
Metadata
MSL enriched sub domains
geochemistry
microscopy and tomography
Resource Type
Source publisher
| GFZ Data Services |
Creators
| Franz, Gerhard |
| Personal |
| Department of Applied Geosciences, Technical University Berlin, Berlin, Germany |
| Schiperski, Ferry |
| Personal |
| Department of Applied Geosciences, Technical University Berlin, Berlin, Germany |
| Khomenko, Vladimir |
| Personal |
| The National Academy of Sciences, M. P. Semenenko Institute of Geochemistry, Mineralogy and Ore Formation, Kyiv, Ukraine |
| Gernert, Ulrich |
| Personal |
| Zentraleinrichtung Elektronenmikroskopie, Technical University Berlin, Berlin; Germany |
| Nissen, Jörg |
| Personal |
| Zentraleinrichtung Elektronenmikroskopie, Technical University Berlin, Berlin; Germany |
Contributors
| Franz, Gerhard |
| Personal |
| Department of Applied Geosciences, Technical University Berlin, Berlin, Germany |
Citation
Franz, G., Schiperski, F., Khomenko, V., Gernert, U., & Nissen, J. (2025). Colombian emeralds – internal and external growth and dissolution features [Dataset]. GFZ Data Services. https://doi.org/10.5880/FIDGEO.2025.006
References
Dates
| Issued | 2025 |
Language
- no language entry found -
Rights
| Name | Creative Commons Attribution 4.0 International |
| URI | https://creativecommons.org/licenses/by/4.0/legalcode |
| Identifier | cc-by-4.0 |
| Identifier Scheme | SPDX |
| Scheme URI | https://spdx.org/licenses/ |
Locations
- no geo-locations found -