Related Experiment Video
Updated: Feb 14, 2026
09:16
X-ray Powder Diffraction in Conservation Science: Towards Routine Crystal Structure Determination of Corrosion Products on Heritage Art Objects
Published on: June 8, 2016
16.8K
Raman Spectroscopy and X-Ray Diffraction Investigations of Phase Composition of Tiglit Meteorite
Anna Karczemska1, Mariusz Dudek2, Bartłomiej Januszewicz2
1Institute of Turbomachinery, Lodz University of Technology, Wolczanska 217/221, 93-005 Lodz, Poland.
Materials (Basel, Switzerland)
|February 13, 2026
Summary
The Tiglit aubrite meteorite, which fell in Morocco in 2021, contains unusual calcite and silica phases. These minerals formed from terrestrial alteration of the meteorite
Area of Science:
- * Mineralogy and Petrology
- * Extraterrestrial Materials Science
- * Cosmochemistry
Background:
- * Aubrites are rare, enstatite-rich achondritic meteorites.
- * The Tiglit meteorite provides a recent sample of this meteorite class.
- * Understanding aubrite composition informs planetary formation theories.
Purpose of the Study:
- * To determine the phase and chemical composition of the Tiglit meteorite.
- * To investigate the presence of unusual mineral phases.
- * To understand the formation mechanisms of detected minerals.
Main Methods:
- * Scanning electron microscopy with energy-dispersive X-ray spectroscopy (SEM-EDS).
- * Raman spectroscopy.
- * X-ray diffraction (XRD).
Main Results:
- * Confirmed presence of pyroxene, olivine, plagioclase, sulfides, carbon, and iron oxides.
- * Detected unexpected calcite and polymorphic SiO2 phases.
- * Calcite formation attributed to terrestrial alteration of oldhamite.
Conclusions:
- * The Tiglit aubrite exhibits a unique mineralogical composition.
- * Terrestrial weathering significantly impacts meteorite chemistry post-fall.
- * The study highlights the importance of rapid sample recovery for pristine analysis.
Related Concept Videos
01:10X-ray Diffraction of Biological Samples
4.9K
X-ray diffraction or XRD is an analytical tool that utilizes X-rays to study ordered structures such as crystalline organic and inorganic samples, polycrystalline materials, proteins, carbohydrates, and drugs.
According to Bragg's law, when X-rays strike the sample positioned on a stage, the rays are scattered by the electron clouds around the sample atoms. The X-ray diffraction or scattering is caused by constructive interference of the X-ray waves that reflect off the internal...
According to Bragg's law, when X-rays strike the sample positioned on a stage, the rays are scattered by the electron clouds around the sample atoms. The X-ray diffraction or scattering is caused by constructive interference of the X-ray waves that reflect off the internal...
4.9K
02:18X-ray Crystallography
26.3K
The size of the unit cell and the arrangement of atoms in a crystal may be determined from measurements of the diffraction of X-rays by the crystal, termed X-ray crystallography.
Diffraction
Diffraction is the change in the direction of travel experienced by an electromagnetic wave when it encounters a physical barrier whose dimensions are comparable to those of the wavelength of the light. X-rays are electromagnetic radiation with wavelengths about as long as the distance between neighboring...
Diffraction
Diffraction is the change in the direction of travel experienced by an electromagnetic wave when it encounters a physical barrier whose dimensions are comparable to those of the wavelength of the light. X-rays are electromagnetic radiation with wavelengths about as long as the distance between neighboring...
26.3K
01:20Raman Spectroscopy: Overview
1.8K
The underlying principle of Raman spectroscopy is based on the interaction between light and matter, specifically molecules' inelastic scattering of photons. When a monochromatic beam of light, typically from a laser source, interacts with a sample, most scattered light has the same frequency as the incident light. This is known as Rayleigh scattering.
However, a small fraction of the scattered light exhibits a frequency shift due to the exchange of energy between the incident photons and...
However, a small fraction of the scattered light exhibits a frequency shift due to the exchange of energy between the incident photons and...
1.8K
02:18Interference and Diffraction
52.6K
Interference is a characteristic phenomenon exhibited by waves. When two electromagnetic waves interact with their peaks and troughs coinciding, a resulting wave with enhanced amplitude is produced. This is known as constructive interference. In this case, the two waves interacting are in phase with each other.
52.6K
01:26Raman Spectroscopy Instrumentation: Overview
1.4K
A conventional Raman spectrophotometer includes a laser source, a sample holding system, a wavelength selector, and a detector.
The monochromatic laser source, typically using visible or near-infrared radiation, generates a highly focused beam of light. This light interacts with the molecules of the sample, scattering some of the light. Liquid and gaseous samples are usually tested in ordinary glass capillaries, while solids can be analyzed as powders packed in capillaries or as potassium...
The monochromatic laser source, typically using visible or near-infrared radiation, generates a highly focused beam of light. This light interacts with the molecules of the sample, scattering some of the light. Liquid and gaseous samples are usually tested in ordinary glass capillaries, while solids can be analyzed as powders packed in capillaries or as potassium...
1.4K
01:30Radiological Investigation I: X-ray and CT
1.2K
Radiological investigations, including X-rays and computed tomography (CT) scans, are critical for diagnosing and evaluating various medical conditions. These imaging techniques provide valuable insights into the body's internal structures, aiding in the detection of abnormalities, assessment of disease progression, and development of treatment strategies. This article delves into two primary radiological investigations, chest X-rays and CT scans, outlining their purpose, procedures, and...
1.2K