Pink to Purple Sapphires from Ilakaka, Madagascar: Insights to Separate Unheated from Heated Samples
Abstract
:1. Introduction
2. Materials and Methods
3. Results and Discussion
4. Conclusions
Author Contributions
Funding
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Treatment | FWHM (cm−1) | Median Value (cm−1) | Average Value (cm−1) | Reference |
---|---|---|---|---|
Unheated | 10.1–13.5 | na* | 11.5 | [9] |
Unheated | 8.8–13.8 | na* | na* | [12] |
Unheated | 7.5–17.6 | <10 | na* | [8] |
Unheated | 7.1–21.7 | 11.3 | 11.6 | [13,14] |
Heated to 1000 °C | 6.6–12.7 | na* | na* | [12] |
Heated to 1400 °C | na* | na* | 8.7 | [9] |
Sample Number | Mass (ct) | Dimensions (mm) | Colour | Photo |
---|---|---|---|---|
SK-007 | 0.373 | 4.43 × 4.15 × 2.02 | Light pink | |
SK-008 | 0.412 | 5.09 × 4.64 × 1.86 | Light pink | |
SK-009 | 0.525 | 6.44 × 4.13 × 2.04 | Pink | |
SK-010 | 0.566 | 6.83 × 5.31 × 1.63 | Pink | |
SK-011 | 0.346 | 5.12 × 4.07 × 2.00 | Purplish-pink | |
SK-012 | 0.328 | 5.13 × 3.50 × 2.16 | Light pink | |
SK-013 | 0.307 | 3.96 × 3.03 × 2.04 | Light pink | |
SK-014 | 0.337 | 4.71 × 3.75 × 2.19 | Pink | |
SK-015 | 0.599 | 5.01 × 4.49 × 2.51 | Pinkish-purple | |
SK-016 | 0.460 | 4.76 × 3.59 × 2.29 | Purple-pink | |
SK-017 | 0.346 | 4.28 × 3.23 × 2.44 | Pinkish-purple | |
SK-018 | 0.319 | 4.15 × 3.49 × 2.06 | Light pink | |
SK-023 | 0.255 | 4.98 × 3.77 × 1.65 | Pink | |
SK-024 | 0.550 | 5.37 × 4.16 × 2.62 | Pink | |
SK-025 | 0.357 | 4.35 × 3.70 × 2.29 | Pink |
Sample Number | Mass (ct) | Dimensions (mm) | Colour | Photo |
---|---|---|---|---|
LFG101 | 1.797 | 9.02 × 6.22 × 4.28 | Purplish pink | |
LFG102 | 1.893 | 8.94 × 6.52 × 4.02 | Purplish pink | |
LFG103 | 2.038 | 7.78 × 6.30 × 4.86 | Purplish pink | |
LFG104 | 3.022 | 9.57 × 7.74 × 4.55 | Purplish pink | |
LFG105 | 3.214 | 10.27 × 8.39 × 4.57 | Purplish pink | |
LFG106 | 3.027 | 9.22 × 7.93 × 4.87 | Purplish pink |
Sample | Range of Peak Position (cm−1) | Range of FWHM (cm−1) | Number of Analysed Zircon Inclusions | Total Number of Raman Analyses |
---|---|---|---|---|
SK-007 | 1013.86–1019.02 | 7.87–17.70 | 20 | 28 |
SK-008 | 1017.56–1020.65 | 15.07–18.42 | 5 | 7 |
SK-009 | 1018.81–1019.73 | 9.47–21.73 | 7 | 7 |
SK-010 | 1005.10–1017.21 | 7.06–13.14 | 10 | 10 |
SK-011 | 1011.87–1019.01 | 9.60–13.39 | 10 | 10 |
SK-012 | 1011.13–1015.32 | 8.11–12.09 | 5 | 5 |
SK-013 | 1014.12–1017.22 | 7.11–11.65 | 8 | 8 |
SK-014 | 1011.20–1016.63 | 7.87–13.80 | 10 | 10 |
SK-015 | 1012.74–1021.11 | 7.55–14.21 | 7 | 7 |
SK-016 | - | - | - | - |
SK-017 | 1012.37–1018.22 | 7.25–16.15 | 13 | 17 |
SK-018 | 1003.76–1005.25 | 14.48–15.85 | 2 | 2 |
SK-023 | 1014.14–1021.61 | 6.26–15.39 | 20 | 26 |
SK-024 | 1014.55–1018.21 | 6.83–13 | 20 | 26 |
SK-025 | 1010.00–1016.14 | 6.81–10.31 | 20 | 26 |
Sample | Range of Peak Position (cm−1) | Range of FWHM (cm−1) | Number of Analysed Zircon Inclusions | Total Number of Raman Analyses |
---|---|---|---|---|
LFG101 | 1018.34–1020.23 | 5.47–5.91 | 6 | 6 |
LFG102 | 1017.95–1019.57 | 4.83–6.86 | 10 | 10 |
LFG103 | 1007.29–1013.24 | 6.56–9.32 | 11 | 11 |
LFG104 | 1009.75–1013.82 | 6.36–7.79 | 10 | 10 |
LFG105 | 1010.58–1014.12 | 6.19–11.38 | 17 | 22 |
LFG106 | 1018.34–1020.23 | 5.16–14.97 | 20 | 34 |
Range of FWHM (cm−1) | Non-Heated | Heated |
---|---|---|
<6 | 0/157 | 17/74 (ca. 23%) |
6–7 | 3/157 (ca. 1.9%) | 17/74 (ca. 23%) |
7–8 | 21/157 (ca. 13.4%) | 25/74 (ca. 34%) |
8–9 | 25/157 (ca. 15.9%) | 9/74 (ca. 12%) |
9–10 | 28/157 (ca. 17.8%) | 2/74 (ca. 2.7%) |
10–11 | 15/157 (ca. 9.6%) | 1/74 (ca. 1.3%) |
11–12 | 18/157 (ca. 11.5%) | 2/74 (ca. 2.7%) |
12–13 | 19/157 (ca. 12.1%) | 0/74 |
13–14 | 10/157 (ca. 6.4%) | 0/74 |
14–15 | 4/157 (ca. 2.5%) | 1/74 (ca. 1.3%) |
15–16 | 5/157 (ca. 3.1%) | 0/74 |
16–17 | 3/157 (ca. 1.9%) | 0/74 |
17–18 | 2/157 (ca. 1.3%) | 0/74 |
18–19 | 2/157 (ca. 1.3%) | 0/74 |
>20 | 2/157 (ca. 1.3%) | 0/74 |
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Karampelas, S.; Hennebois, U.; Mevellec, J.-Y.; Pardieu, V.; Delaunay, A.; Fritsch, E. Pink to Purple Sapphires from Ilakaka, Madagascar: Insights to Separate Unheated from Heated Samples. Minerals 2023, 13, 704. https://doi.org/10.3390/min13050704
Karampelas S, Hennebois U, Mevellec J-Y, Pardieu V, Delaunay A, Fritsch E. Pink to Purple Sapphires from Ilakaka, Madagascar: Insights to Separate Unheated from Heated Samples. Minerals. 2023; 13(5):704. https://doi.org/10.3390/min13050704
Chicago/Turabian StyleKarampelas, Stefanos, Ugo Hennebois, Jean-Yves Mevellec, Vincent Pardieu, Aurélien Delaunay, and Emmanuel Fritsch. 2023. "Pink to Purple Sapphires from Ilakaka, Madagascar: Insights to Separate Unheated from Heated Samples" Minerals 13, no. 5: 704. https://doi.org/10.3390/min13050704