GEM KNOWLEDGE · LABORATORY NOTES
Barite (Kazakhstan)
This Kazakhstan-sourced specimen is a polished section of a hydrothermal vein.
What the report found: Sample 1207 consists mainly of quartz and barite. The laboratory also found minor galena and malachite/azurite, with signs of oxidation affecting some phases.
The Kazakhstan locality is Soul Body Gems sourcing information; the analysis identifies minerals in the submitted specimen, not geographic origin.
View the original report
Select a page to enlarge it. 4 pages; findings are summarized in accessible text above.
Report images © Soul Body Gems, Alexander Falster and the Maine Mineral & Gem Museum. Please acknowledge all three when referring to these results. Findings apply to the specimen examined.
Understanding the report figures
Use this guide alongside the written findings and the original report transcript. It explains the purpose of each analytical figure and preserves the laboratory’s own figure labels. The interpretations apply to the tested specimen; signals alone do not establish the identity of every similar-looking stone.
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Electron microscope image: This view shows small-scale regions selected for analysis. Its brightness contrast helps distinguish regions with different compositions; it is not a photograph of their natural colors. Numbered spots connect this view to the analyses listed in the report.
Laboratory figure caption: Fig.2: Backscattered electron image of an area of the specimen.
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Elemental spectrum: The peaks record characteristic X-ray signals from elements in the analyzed spot or area. This is an analysis of that location, not automatically of the entire specimen. Any mineral identification or uncertainty named in the laboratory caption is retained below.
Laboratory figure caption: Fig. 3: Energy dispersive spectrum of spot 1 in Fig. 2. (quartz)
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Elemental spectrum: The peaks record characteristic X-ray signals from elements in the analyzed spot or area. This is an analysis of that location, not automatically of the entire specimen. Any mineral identification or uncertainty named in the laboratory caption is retained below.
Laboratory figure caption: Fig. 4: Energy dispersive spectrum of spot 2 in Fig. 2. (barite)
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Elemental spectrum: The peaks record characteristic X-ray signals from elements in the analyzed spot or area. This is an analysis of that location, not automatically of the entire specimen. Any mineral identification or uncertainty named in the laboratory caption is retained below.
Laboratory figure caption: Fig. 5: Energy dispersive spectrum of spot 2 in Fig. 2. (galena, possibly beginning oxidation to anglesite)
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Electron microscope image: This view shows small-scale regions selected for analysis. Its brightness contrast helps distinguish regions with different compositions; it is not a photograph of their natural colors. Numbered spots connect this view to the analyses listed in the report.
Laboratory figure caption: Fig.6: Backscattered electron image of another area of the specimen.
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Elemental spectrum: The peaks record characteristic X-ray signals from elements in the analyzed spot or area. This is an analysis of that location, not automatically of the entire specimen. Any mineral identification or uncertainty named in the laboratory caption is retained below.
Laboratory figure caption: Fig. 7: Energy dispersive spectrum of spot 4 in Fig. 5. (malachite/azurite)
Read the laboratory document as text
Text and tables from the laboratory document are provided below. Consult the adjacent findings for the interpretation of each tested specimen.
Laboratory document 1
Analytical Result Report
Sample id: 1207 (#6 Kazakhstan sample)
Submitted by: Soul Body Gems
Date completed: 12-22-2024
Operating conditions: An AMRAY 1830 SEM operated at 25 kV acceleration potential, 24 mm working distance, 0
degrees sample tilt, coated with 250 Å carbon, and also using the attached XRF unit operated at 30 kV.
ig. 1: Photograph of the specimens. 6 cm maximum dimensions.
Fig.2: Backscattered electron image of an area of the specimen.
Fig. 3: Energy dispersive spectrum of spot 1 in Fig. 2. (quartz)
Fig. 4: Energy dispersive spectrum of spot 2 in Fig. 2. (barite)
Fig. 5: Energy dispersive spectrum of spot 2 in Fig. 2. (galena, possibly beginning oxidation to anglesite)
Fig.6: Backscattered electron image of another area of the specimen.
Fig. 7: Energy dispersive spectrum of spot 4 in Fig. 5. (malachite/azurite)
Summary of findings: This specimen (Fig. 1) is a piece of a hydrothermal vein consisting mainly of quartz (Figs. 2 and 3 )
and barite (Figs. 2 and 4). It also contains a small amount of galena (Figs. 2 and 5) and some malachite/azurite (Figs. 6
and 7. The malachite likely stems from oxidation of originally associated copper sulfides in the hydrothermal vein which
subsequently have altered to green and blue malachite and azurite. There is evidence of at least some oxidation of the
galena as well, it is likely partially oxidized to anglesite, see the small oxygen peak in Fig. 5.
Date: 12-22-2024 Signature



