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![(A) The tetrahedral chain in monteregianite-(Y) with a periodicity of four ...]()
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![Back-scattered electron image of a crystal composed of <span class="search-highlight">melansonite</span> and natr...]()
![BOND-VALENCE SUMS FOR <span class="search-highlight">MELANSONITE</span>]()
![SELECTED BOND DISTANCES (Å) IN <span class="search-highlight">MELANSONITE</span>]()
![POSITIONAL AND DISPLACEMENT (Å 2 ) PARAMETERS FOR <span class="search-highlight">MELANSONITE</span>]()
![Paragenetic sequence for minerals found in association with <span class="search-highlight">melansonite</span>.]()
![POWDER X-RAY DIFFRACTION DATA FOR <span class="search-highlight">MELANSONITE</span>]()
![DATA COLLECTION AND STRUCTURE REFINEMENT DETAILS FOR <span class="search-highlight">MELANSONITE</span>]()
![COMPARATIVE DATA FOR <span class="search-highlight">MELANSONITE</span> AND RHODESITE-RELATED MINERALS]()
![RAMAN SPECTRUM BAND ASSIGNMENTS AND BAND CHARACTER FOR <span class="search-highlight">MELANSONITE</span>]()
![DESCRIPTIONS AND MODAL ABUNDANCES (VISUALLY ESTIMATED) OF MINERALS OCCURRIN...]()
![Chemical data for natromelansonite and <span class="search-highlight">melansonite</span>. *Calculated from ...]()
![Secondary electron image of a crystal of <span class="search-highlight">melansonite</span> after EPMA, showing de...]()
![The Raman spectrum of <span class="search-highlight">melansonite</span> (red) and a comparison to that of montere...]()
![Grey tabular prismatic crystals composed of natromelansonite and <span class="search-highlight">melansonit</span>...]()
![A cluster of colorless, rectangular plates of <span class="search-highlight">melansonite</span> with an apophylli...]()
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melansonite
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Journal Article
Melansonite, (Na,□)□ 2 KZrSi 8 O 19 ·5H 2 O, a New Member of the Rhodesite Group, from Mont Saint-Hilaire, Québec, Canada: Characterization, Crystal-Structure Determination, and Origin
Publisher: Mineralogical Association of Canada
Published: 07 July 2023
The Canadian Journal of Mineralogy and Petrology (2023) 61 (2): 387–400.
...Thomas E. Gore; Andrew M. McDonald Abstract Melansonite, ideally (Na,□)□ 2 KZrSi 8 O 19 ·5H 2 O, is a new mineral discovered at the Poudrette Quarry, Mont Saint-Hilaire, Québec, Canada. It develops as loose clusters of square to rectangular, euhedral plates with average dimensions of 35 × 50 μm...
FIGURES
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Journal Article
Comment on Lykova et al. (2024): “Natromelansonite, Na 3 Zr[Si 7 AlO 19 ]⋅4–5H 2 O, a new member of the rhodesite mero-plesiotype series from Mont Saint-Hilaire, Quebec, Canada”
Journal: Mineralogical Magazine
Published: 01 October 2024
Mineralogical Magazine (2024) 88 (5): 623–625.
..., and provide commentary on the related species, melansonite (Na,□)□ 2 KZrSi 8 O 19 ⋅5H 2 O. The comments in question revolve primarily around the roles and abundances of Al and Na in both minerals, and how their incorporation is best represented in their idealised formulae. Lykova et al. ( 2024 ) state that Al...
Journal Article
Reply to the Comment on the paper on natromelansonite by Gore and McDonald (2024)
Journal: Mineralogical Magazine
Published: 01 October 2024
Mineralogical Magazine (2024) 88 (5): 626.
... 3 (average of 15 analyses; Gore and McDonald, 2023 ) in melansonite. These numbers are very consistent and correspond to ~1 atoms per formula unit of Al. In the structures of both melansonite and natromelansonite one of the Si-centred tetrahedra is larger than others which is reflected...
Image
(A) The tetrahedral chain in monteregianite-(Y) with a periodicity of four ...
in Melansonite, (Na,□)□ 2 KZrSi 8 O 19 ·5H 2 O, a New Member of the Rhodesite Group, from Mont Saint-Hilaire, Québec, Canada: Characterization, Crystal-Structure Determination, and Origin
> The Canadian Journal of Mineralogy and Petrology
Published: 07 July 2023
Fig. 7. (A) The tetrahedral chain in monteregianite-(Y) with a periodicity of four and a repeat of 9.6 Å. (B) The tetrahedral chain in melansonite with a periodicity of three and a repeat of 6.5 Å. Note the greater repeat distance and increased periodicity in monteregianite-(Y) relative
Journal Article
Natromelansonite, Na 3 Zr[Si 7 AlO 19 ]⋅4–5H 2 O, a new member of the rhodesite mero-plesiotype series from Mont Saint-Hilaire, Quebec, Canada
Journal: Mineralogical Magazine
Published: 15 January 2024
Mineralogical Magazine (2024) 88 (2): 195–202.
... and rhodochrosite. It occurs as an outer zone of tabular crystals to 0.1 × 0.3 × 1 mm in size flattened on (001). The inner zone is made of melansonite. The mineral is grey with white powder colour and vitreous lustre. The cleavage is parallel to {010}, perfect. The Mohs hardness is 3.5. The mineral has green...
FIGURES
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Image
Back-scattered electron image of a crystal composed of melansonite and natr...
in Natromelansonite, Na 3 Zr[Si 7 AlO 19 ]⋅4–5H 2 O, a new member of the rhodesite mero-plesiotype series from Mont Saint-Hilaire, Quebec, Canada
> Mineralogical Magazine
Published: 15 January 2024
Figure 2. Back-scattered electron image of a crystal composed of melansonite and natromelansonite zones. Bright zone – U-bearing melansonite. Polished section, specimen CMNMC 90813.
Image
BOND-VALENCE SUMS FOR MELANSONITE
in Melansonite, (Na,□)□ 2 KZrSi 8 O 19 ·5H 2 O, a New Member of the Rhodesite Group, from Mont Saint-Hilaire, Québec, Canada: Characterization, Crystal-Structure Determination, and Origin
> The Canadian Journal of Mineralogy and Petrology
Published: 07 July 2023
TABLE 6. BOND-VALENCE SUMS FOR MELANSONITE
Image
SELECTED BOND DISTANCES (Å) IN MELANSONITE
in Melansonite, (Na,□)□ 2 KZrSi 8 O 19 ·5H 2 O, a New Member of the Rhodesite Group, from Mont Saint-Hilaire, Québec, Canada: Characterization, Crystal-Structure Determination, and Origin
> The Canadian Journal of Mineralogy and Petrology
Published: 07 July 2023
TABLE 7. SELECTED BOND DISTANCES (Å) IN MELANSONITE
Image
POSITIONAL AND DISPLACEMENT (Å 2 ) PARAMETERS FOR MELANSONITE
in Melansonite, (Na,□)□ 2 KZrSi 8 O 19 ·5H 2 O, a New Member of the Rhodesite Group, from Mont Saint-Hilaire, Québec, Canada: Characterization, Crystal-Structure Determination, and Origin
> The Canadian Journal of Mineralogy and Petrology
Published: 07 July 2023
TABLE 5. POSITIONAL AND DISPLACEMENT (Å 2 ) PARAMETERS FOR MELANSONITE
Image
Paragenetic sequence for minerals found in association with melansonite.
in Melansonite, (Na,□)□ 2 KZrSi 8 O 19 ·5H 2 O, a New Member of the Rhodesite Group, from Mont Saint-Hilaire, Québec, Canada: Characterization, Crystal-Structure Determination, and Origin
> The Canadian Journal of Mineralogy and Petrology
Published: 07 July 2023
Fig. 1. Paragenetic sequence for minerals found in association with melansonite.
Image
POWDER X-RAY DIFFRACTION DATA FOR MELANSONITE
in Melansonite, (Na,□)□ 2 KZrSi 8 O 19 ·5H 2 O, a New Member of the Rhodesite Group, from Mont Saint-Hilaire, Québec, Canada: Characterization, Crystal-Structure Determination, and Origin
> The Canadian Journal of Mineralogy and Petrology
Published: 07 July 2023
TABLE 3. POWDER X-RAY DIFFRACTION DATA FOR MELANSONITE
Image
DATA COLLECTION AND STRUCTURE REFINEMENT DETAILS FOR MELANSONITE
in Melansonite, (Na,□)□ 2 KZrSi 8 O 19 ·5H 2 O, a New Member of the Rhodesite Group, from Mont Saint-Hilaire, Québec, Canada: Characterization, Crystal-Structure Determination, and Origin
> The Canadian Journal of Mineralogy and Petrology
Published: 07 July 2023
TABLE 4. DATA COLLECTION AND STRUCTURE REFINEMENT DETAILS FOR MELANSONITE
Image
COMPARATIVE DATA FOR MELANSONITE AND RHODESITE-RELATED MINERALS
in Melansonite, (Na,□)□ 2 KZrSi 8 O 19 ·5H 2 O, a New Member of the Rhodesite Group, from Mont Saint-Hilaire, Québec, Canada: Characterization, Crystal-Structure Determination, and Origin
> The Canadian Journal of Mineralogy and Petrology
Published: 07 July 2023
TABLE 8. COMPARATIVE DATA FOR MELANSONITE AND RHODESITE-RELATED MINERALS
Image
RAMAN SPECTRUM BAND ASSIGNMENTS AND BAND CHARACTER FOR MELANSONITE
in Melansonite, (Na,□)□ 2 KZrSi 8 O 19 ·5H 2 O, a New Member of the Rhodesite Group, from Mont Saint-Hilaire, Québec, Canada: Characterization, Crystal-Structure Determination, and Origin
> The Canadian Journal of Mineralogy and Petrology
Published: 07 July 2023
TABLE 2. RAMAN SPECTRUM BAND ASSIGNMENTS AND BAND CHARACTER FOR MELANSONITE
Image
DESCRIPTIONS AND MODAL ABUNDANCES (VISUALLY ESTIMATED) OF MINERALS OCCURRIN...
in Melansonite, (Na,□)□ 2 KZrSi 8 O 19 ·5H 2 O, a New Member of the Rhodesite Group, from Mont Saint-Hilaire, Québec, Canada: Characterization, Crystal-Structure Determination, and Origin
> The Canadian Journal of Mineralogy and Petrology
Published: 07 July 2023
TABLE 1. DESCRIPTIONS AND MODAL ABUNDANCES (VISUALLY ESTIMATED) OF MINERALS OCCURRING WITH MELANSONITE
Image
Chemical data for natromelansonite and melansonite. *Calculated from ...
in Natromelansonite, Na 3 Zr[Si 7 AlO 19 ]⋅4–5H 2 O, a new member of the rhodesite mero-plesiotype series from Mont Saint-Hilaire, Quebec, Canada
> Mineralogical Magazine
Published: 15 January 2024
Table 1. Chemical data for natromelansonite and melansonite. *Calculated from the stoichiometry; dash means the content of a constituent is below the detection limit.
Image
Secondary electron image of a crystal of melansonite after EPMA, showing de...
in Melansonite, (Na,□)□ 2 KZrSi 8 O 19 ·5H 2 O, a New Member of the Rhodesite Group, from Mont Saint-Hilaire, Québec, Canada: Characterization, Crystal-Structure Determination, and Origin
> The Canadian Journal of Mineralogy and Petrology
Published: 07 July 2023
Fig. 3. Secondary electron image of a crystal of melansonite after EPMA, showing development of desiccation-like cracks.
Image
The Raman spectrum of melansonite (red) and a comparison to that of montere...
in Melansonite, (Na,□)□ 2 KZrSi 8 O 19 ·5H 2 O, a New Member of the Rhodesite Group, from Mont Saint-Hilaire, Québec, Canada: Characterization, Crystal-Structure Determination, and Origin
> The Canadian Journal of Mineralogy and Petrology
Published: 07 July 2023
Fig. 4. The Raman spectrum of melansonite (red) and a comparison to that of monteregianite-(Y) (black). See Table 2 for band assignments.
Image
Grey tabular prismatic crystals composed of natromelansonite and melansonit...
in Natromelansonite, Na 3 Zr[Si 7 AlO 19 ]⋅4–5H 2 O, a new member of the rhodesite mero-plesiotype series from Mont Saint-Hilaire, Quebec, Canada
> Mineralogical Magazine
Published: 15 January 2024
Figure 1. Grey tabular prismatic crystals composed of natromelansonite and melansonite on a beige aggregate of a poorly diffracting clay mineral and steacyite microcrystals. Specimen CMNMC 90813. Photo: François Génier.
Image
A cluster of colorless, rectangular plates of melansonite with an apophylli...
in Melansonite, (Na,□)□ 2 KZrSi 8 O 19 ·5H 2 O, a New Member of the Rhodesite Group, from Mont Saint-Hilaire, Québec, Canada: Characterization, Crystal-Structure Determination, and Origin
> The Canadian Journal of Mineralogy and Petrology
Published: 07 July 2023
Fig. 2. A cluster of colorless, rectangular plates of melansonite with an apophyllite-group mineral (white) and calcite (orange). The small black spots visible on some crystals are minute inclusions of pyrrhotite (?). FOV = 0.8 mm, photograph courtesy of Michael J. Bainbridge.
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