Macraeite, [(H<sub>2</sub>O)K]Mn<sub>2</sub>(Fe<sub>2</sub>Ti)(PO<sub>4</sub>)<sub>4</sub>[O(OH)](H<sub>2</sub>O)<sub>10</sub>&thinsp; ⋅ &thinsp;4H<sub>2</sub>O, a new monoclinic paulkerrite-group mineral, from the Cubos–Mesquitela–Mangualde pegmatite, Portugal

Macraeite, [(H<sub>2</sub>O)K]Mn<sub>2</sub>(Fe<sub>2</sub>Ti)(PO<sub>4</sub>)<sub>4</sub>[O(OH)](H<sub>2</sub>O)<sub>10</sub>&thinsp; ⋅ &thinsp;4H<sub>2</sub>O, a new monoclinic paulkerrite-group mineral, from the Cubos–Mesquitela–Mangualde pegmatite, Portugal

<p>Macraeite, [(H<span class="inline-formula"><sub>2</sub></span>O)K]Mn<span class="inline-formula"><sub>2</sub></span>(Fe<span class="inline-formula"><sub>2</sub></span>Ti)(PO<span class=&...

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Main Authors: I. E. Grey, C. Rewitzer, R. Hochleitner, A. R. Kampf, S. Boer, W. G. Mumme, N. C. Wilson
Format: Article
Language:English
Published: Copernicus Publications 2024-03-01
Series:European Journal of Mineralogy
Online Access:https://ejm.copernicus.org/articles/36/267/2024/ejm-36-267-2024.pdf
_version_ 1827319043461218304
author I. E. Grey
C. Rewitzer
R. Hochleitner
A. R. Kampf
S. Boer
W. G. Mumme
N. C. Wilson
author_facet I. E. Grey
C. Rewitzer
R. Hochleitner
A. R. Kampf
S. Boer
W. G. Mumme
N. C. Wilson
author_sort I. E. Grey
collection DOAJ
description <p>Macraeite, [(H<span class="inline-formula"><sub>2</sub></span>O)K]Mn<span class="inline-formula"><sub>2</sub></span>(Fe<span class="inline-formula"><sub>2</sub></span>Ti)(PO<span class="inline-formula"><sub>4</sub></span>)<span class="inline-formula"><sub>4</sub></span>[O(OH)](H<span class="inline-formula"><sub>2</sub></span>O)<span class="inline-formula"><sub>10</sub></span> <span class="inline-formula">⋅</span> 4H<span class="inline-formula"><sub>2</sub></span>O, is a new monoclinic member of the paulkerrite group, from the Cubos–Mesquitela–Mangualde pegmatite, Mangualde, Portugal. It was found in phosphate nodules of weathered triplite, heterosite, and lithiophilite. Associated minerals are strengite, triplite, bermanite, phosphosiderite, and switzerite.</p> <p>Macraeite forms colourless to light-greenish-yellow pseudo-rhombic dodecahedral-shaped crystals up to 0.15 mm. The crystals are equant with forms {010}, {001}, {111}, and {<span class="inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" id="M19" display="inline" overflow="scroll" dspmath="mathml"><mover accent="true"><mn mathvariant="normal">1</mn><mo mathvariant="normal">‾</mo></mover></math><span><svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="8pt" height="13pt" class="svg-formula" dspmath="mathimg" md5hash="52ccb44bd52443b5c78783e0d1501948"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="ejm-36-267-2024-ie00001.svg" width="8pt" height="13pt" src="ejm-36-267-2024-ie00001.png"/></svg:svg></span></span>11}. The calculated density is 2.39 g cm<span class="inline-formula"><sup>−3</sup></span>. Optically, macraeite crystals are biaxial (<span class="inline-formula">+</span>), with <span class="inline-formula"><i>α</i>=1.605(3)</span>, <span class="inline-formula"><i>β</i>=1.611(3)</span>, <span class="inline-formula"><i>γ</i>=1.646(3)</span> (measured in white light), and 2<span class="inline-formula"><i>V</i></span>(meas) <span class="inline-formula">=</span> 45(3)°. The empirical formula from electron microprobe analyses and structure refinement is <span class="inline-formula"><sup><i>A</i>1</sup></span>[(H<span class="inline-formula"><sub>2</sub></span>O)<span class="inline-formula"><sub>0.83</sub></span>K<span class="inline-formula"><sub>0.17</sub></span>]<span class="inline-formula"><sub>Σ1.00</sub></span> <span class="inline-formula"><sup><i>A</i>2</sup></span>[K<span class="inline-formula"><sub>0.65</sub></span>(H<span class="inline-formula"><sub>2</sub></span>O)<span class="inline-formula"><sub>0.35</sub></span>]<span class="inline-formula"><sub>Σ1.00</sub></span> <span class="inline-formula"><sup><i>M</i>1</sup></span>(Mn<span class="inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" id="M38" display="inline" overflow="scroll" dspmath="mathml"><mrow><msubsup><mi/><mrow><mn mathvariant="normal">1.98</mn><mspace width="0.125em" linebreak="nobreak"/><mo>□</mo><mspace width="0.125em" linebreak="nobreak"/><mn mathvariant="normal">0.02</mn></mrow><mrow><mn mathvariant="normal">2</mn><mo>+</mo></mrow></msubsup></mrow></math><span><svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="42pt" height="17pt" class="svg-formula" dspmath="mathimg" md5hash="99e8122d4196e0edb14c3852ff48beb8"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="ejm-36-267-2024-ie00002.svg" width="42pt" height="17pt" src="ejm-36-267-2024-ie00002.png"/></svg:svg></span></span>)<span class="inline-formula"><sub>Σ2.00</sub></span> <span class="inline-formula"><sup><i>M</i>2</sup></span>(Fe<span class="inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" id="M41" display="inline" overflow="scroll" dspmath="mathml"><mrow><msubsup><mi/><mn mathvariant="normal">1.09</mn><mrow><mn mathvariant="normal">3</mn><mo>+</mo></mrow></msubsup></mrow></math><span><svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="18pt" height="17pt" class="svg-formula" dspmath="mathimg" md5hash="ff7025d9a180851be09b0a5a9dafe4b6"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="ejm-36-267-2024-ie00003.svg" width="18pt" height="17pt" src="ejm-36-267-2024-ie00003.png"/></svg:svg></span></span>Al<span class="inline-formula"><sub>0.31</sub></span>Ti<span class="inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" id="M43" display="inline" overflow="scroll" dspmath="mathml"><mrow><msubsup><mi/><mn mathvariant="normal">0.52</mn><mrow><mn mathvariant="normal">4</mn><mo>+</mo></mrow></msubsup></mrow></math><span><svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="18pt" height="17pt" class="svg-formula" dspmath="mathimg" md5hash="a64a42ebdbe27224f4a9389f74808ed1"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="ejm-36-267-2024-ie00004.svg" width="18pt" height="17pt" src="ejm-36-267-2024-ie00004.png"/></svg:svg></span></span>Mg<span class="inline-formula"><sub>0.08</sub></span>)<span class="inline-formula"><sub>Σ2.00</sub></span> <span class="inline-formula"><sup><i>M</i>3</sup></span>(Ti<span class="inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" id="M47" display="inline" overflow="scroll" dspmath="mathml"><mrow><msubsup><mi/><mn mathvariant="normal">0.66</mn><mrow><mn mathvariant="normal">4</mn><mo>+</mo></mrow></msubsup></mrow></math><span><svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="18pt" height="17pt" class="svg-formula" dspmath="mathimg" md5hash="94c65da2b790470e2ec843d87f83884b"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="ejm-36-267-2024-ie00005.svg" width="18pt" height="17pt" src="ejm-36-267-2024-ie00005.png"/></svg:svg></span></span>Fe<span class="inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" id="M48" display="inline" overflow="scroll" dspmath="mathml"><mrow><msubsup><mi/><mn mathvariant="normal">0.34</mn><mrow><mn mathvariant="normal">3</mn><mo>+</mo></mrow></msubsup><msub><mo>)</mo><mrow><mi mathvariant="normal">Σ</mi><mn mathvariant="normal">1.00</mn></mrow></msub></mrow></math><span><svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="42pt" height="17pt" class="svg-formula" dspmath="mathimg" md5hash="e052b7d79f69e15a421fec742b5c78b6"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="ejm-36-267-2024-ie00006.svg" width="42pt" height="17pt" src="ejm-36-267-2024-ie00006.png"/></svg:svg></span></span> (PO<span class="inline-formula"><sub>4</sub></span>)<span class="inline-formula"><sub>4</sub></span> <span class="inline-formula"><sup><i>X</i></sup></span>[O<span class="inline-formula"><sub>0.87</sub></span>F<span class="inline-formula"><sub>0.53</sub></span>(OH)<span class="inline-formula"><sub>0.60</sub></span>]<span class="inline-formula"><sub>Σ2.00</sub></span>(H<span class="inline-formula"><sub>2</sub></span>O)<span class="inline-formula"><sub>10</sub></span> <span class="inline-formula">⋅</span> 4H<span class="inline-formula"><sub>2</sub></span>O.</p> <p>Macraeite has monoclinic symmetry with space group <span class="inline-formula"><i>P</i></span>2<span class="inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" id="M61" display="inline" overflow="scroll" dspmath="mathml"><mrow><msub><mi/><mn mathvariant="normal">1</mn></msub><mo>/</mo><mi>c</mi></mrow></math><span><svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="20pt" height="14pt" class="svg-formula" dspmath="mathimg" md5hash="18efce390d1a45e2eec99053bb843bb0"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="ejm-36-267-2024-ie00007.svg" width="20pt" height="14pt" src="ejm-36-267-2024-ie00007.png"/></svg:svg></span></span> and unit-cell parameters <span class="inline-formula"><i>a</i>=10.562(2)</span> Å, <span class="inline-formula"><i>b</i>=20.725(4)</span> Å, <span class="inline-formula"><i>c</i>=12.416(2)</span> Å, <span class="inline-formula"><i>β</i>=90.09(3)</span>°, <span class="inline-formula"><i>V</i>=2717.8(9)</span> Å<span class="inline-formula"><sup>3</sup></span>, and <span class="inline-formula"><i>Z</i>=4</span>. The crystal structure was refined using synchrotron single-crystal data to <i>wR</i><span class="inline-formula"><sub>obs</sub>=0.065</span> for 4990 reflections with <span class="inline-formula"><i>I</i><i>&gt;</i>3<i>σ</i>(<i>I</i>)</span>. Macraeite is isostructural with the paulkerrite-group minerals rewitzerite and paulkerrite, with ordering of K and H<span class="inline-formula"><sub>2</sub></span>O at different <span class="inline-formula"><i>A</i></span> sites (<span class="inline-formula"><i>A</i></span>1 and <span class="inline-formula"><i>A</i></span>2) of the general formula <span class="inline-formula"><i>A</i></span>1<span class="inline-formula"><i>A</i></span>2<span class="inline-formula"><i>M</i></span>1<span class="inline-formula"><sub>2</sub><i>M</i></span>2<span class="inline-formula"><sub>2</sub><i>M</i></span>3(PO<span class="inline-formula"><sub>4</sub></span>)<span class="inline-formula"><sub>4</sub><i>X</i><sub>2</sub></span>(H<span class="inline-formula"><sub>2</sub></span>O)<span class="inline-formula"><sub>10</sub></span> <span class="inline-formula">⋅</span> 4H<span class="inline-formula"><sub>2</sub></span>O, whereas in the orthorhombic member, benyacarite, K and H<span class="inline-formula"><sub>2</sub></span>O are disordered at a single <span class="inline-formula"><i>A</i></span> site.</p>
first_indexed 2024-04-25T00:13:05Z
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institution Directory Open Access Journal
issn 0935-1221
1617-4011
language English
last_indexed 2024-04-25T00:13:05Z
publishDate 2024-03-01
publisher Copernicus Publications
record_format Article
series European Journal of Mineralogy
spelling doaj.art-13a6a4bcce684af999309b72b87a20462024-03-13T07:11:37ZengCopernicus PublicationsEuropean Journal of Mineralogy0935-12211617-40112024-03-013626727810.5194/ejm-36-267-2024Macraeite, [(H<sub>2</sub>O)K]Mn<sub>2</sub>(Fe<sub>2</sub>Ti)(PO<sub>4</sub>)<sub>4</sub>[O(OH)](H<sub>2</sub>O)<sub>10</sub>&thinsp; ⋅ &thinsp;4H<sub>2</sub>O, a new monoclinic paulkerrite-group mineral, from the Cubos–Mesquitela–Mangualde pegmatite, PortugalI. E. Grey0C. Rewitzer1R. Hochleitner2A. R. Kampf3S. Boer4W. G. Mumme5N. C. Wilson6CSIRO Mineral Resources, Private Bag 10, Clayton South, Victoria 3169, Australiaindependent researcher: Graf von Bogen Str. 6, 93437 Furth im Wald, GermanyBavarian State Collection for Mineralogy (SNSB), Theresienstrasse 41, 80333 Munich, GermanyMineral Sciences Department, Natural History Museum of Los Angeles County, 900 Exposition Boulevard, Los Angeles, CA 90007, USAAustralian Synchrotron, 800 Blackburn Road, Clayton, Victoria 3168, AustraliaCSIRO Mineral Resources, Private Bag 10, Clayton South, Victoria 3169, AustraliaCSIRO Mineral Resources, Private Bag 10, Clayton South, Victoria 3169, Australia<p>Macraeite, [(H<span class="inline-formula"><sub>2</sub></span>O)K]Mn<span class="inline-formula"><sub>2</sub></span>(Fe<span class="inline-formula"><sub>2</sub></span>Ti)(PO<span class="inline-formula"><sub>4</sub></span>)<span class="inline-formula"><sub>4</sub></span>[O(OH)](H<span class="inline-formula"><sub>2</sub></span>O)<span class="inline-formula"><sub>10</sub></span> <span class="inline-formula">⋅</span> 4H<span class="inline-formula"><sub>2</sub></span>O, is a new monoclinic member of the paulkerrite group, from the Cubos–Mesquitela–Mangualde pegmatite, Mangualde, Portugal. It was found in phosphate nodules of weathered triplite, heterosite, and lithiophilite. Associated minerals are strengite, triplite, bermanite, phosphosiderite, and switzerite.</p> <p>Macraeite forms colourless to light-greenish-yellow pseudo-rhombic dodecahedral-shaped crystals up to 0.15 mm. The crystals are equant with forms {010}, {001}, {111}, and {<span class="inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" id="M19" display="inline" overflow="scroll" dspmath="mathml"><mover accent="true"><mn mathvariant="normal">1</mn><mo mathvariant="normal">‾</mo></mover></math><span><svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="8pt" height="13pt" class="svg-formula" dspmath="mathimg" md5hash="52ccb44bd52443b5c78783e0d1501948"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="ejm-36-267-2024-ie00001.svg" width="8pt" height="13pt" src="ejm-36-267-2024-ie00001.png"/></svg:svg></span></span>11}. The calculated density is 2.39 g cm<span class="inline-formula"><sup>−3</sup></span>. Optically, macraeite crystals are biaxial (<span class="inline-formula">+</span>), with <span class="inline-formula"><i>α</i>=1.605(3)</span>, <span class="inline-formula"><i>β</i>=1.611(3)</span>, <span class="inline-formula"><i>γ</i>=1.646(3)</span> (measured in white light), and 2<span class="inline-formula"><i>V</i></span>(meas) <span class="inline-formula">=</span> 45(3)°. The empirical formula from electron microprobe analyses and structure refinement is <span class="inline-formula"><sup><i>A</i>1</sup></span>[(H<span class="inline-formula"><sub>2</sub></span>O)<span class="inline-formula"><sub>0.83</sub></span>K<span class="inline-formula"><sub>0.17</sub></span>]<span class="inline-formula"><sub>Σ1.00</sub></span> <span class="inline-formula"><sup><i>A</i>2</sup></span>[K<span class="inline-formula"><sub>0.65</sub></span>(H<span class="inline-formula"><sub>2</sub></span>O)<span class="inline-formula"><sub>0.35</sub></span>]<span class="inline-formula"><sub>Σ1.00</sub></span> <span class="inline-formula"><sup><i>M</i>1</sup></span>(Mn<span class="inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" id="M38" display="inline" overflow="scroll" dspmath="mathml"><mrow><msubsup><mi/><mrow><mn mathvariant="normal">1.98</mn><mspace width="0.125em" linebreak="nobreak"/><mo>□</mo><mspace width="0.125em" linebreak="nobreak"/><mn mathvariant="normal">0.02</mn></mrow><mrow><mn mathvariant="normal">2</mn><mo>+</mo></mrow></msubsup></mrow></math><span><svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="42pt" height="17pt" class="svg-formula" dspmath="mathimg" md5hash="99e8122d4196e0edb14c3852ff48beb8"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="ejm-36-267-2024-ie00002.svg" width="42pt" height="17pt" src="ejm-36-267-2024-ie00002.png"/></svg:svg></span></span>)<span class="inline-formula"><sub>Σ2.00</sub></span> <span class="inline-formula"><sup><i>M</i>2</sup></span>(Fe<span class="inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" id="M41" display="inline" overflow="scroll" dspmath="mathml"><mrow><msubsup><mi/><mn mathvariant="normal">1.09</mn><mrow><mn mathvariant="normal">3</mn><mo>+</mo></mrow></msubsup></mrow></math><span><svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="18pt" height="17pt" class="svg-formula" dspmath="mathimg" md5hash="ff7025d9a180851be09b0a5a9dafe4b6"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="ejm-36-267-2024-ie00003.svg" width="18pt" height="17pt" src="ejm-36-267-2024-ie00003.png"/></svg:svg></span></span>Al<span class="inline-formula"><sub>0.31</sub></span>Ti<span class="inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" id="M43" display="inline" overflow="scroll" dspmath="mathml"><mrow><msubsup><mi/><mn mathvariant="normal">0.52</mn><mrow><mn mathvariant="normal">4</mn><mo>+</mo></mrow></msubsup></mrow></math><span><svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="18pt" height="17pt" class="svg-formula" dspmath="mathimg" md5hash="a64a42ebdbe27224f4a9389f74808ed1"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="ejm-36-267-2024-ie00004.svg" width="18pt" height="17pt" src="ejm-36-267-2024-ie00004.png"/></svg:svg></span></span>Mg<span class="inline-formula"><sub>0.08</sub></span>)<span class="inline-formula"><sub>Σ2.00</sub></span> <span class="inline-formula"><sup><i>M</i>3</sup></span>(Ti<span class="inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" id="M47" display="inline" overflow="scroll" dspmath="mathml"><mrow><msubsup><mi/><mn mathvariant="normal">0.66</mn><mrow><mn mathvariant="normal">4</mn><mo>+</mo></mrow></msubsup></mrow></math><span><svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="18pt" height="17pt" class="svg-formula" dspmath="mathimg" md5hash="94c65da2b790470e2ec843d87f83884b"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="ejm-36-267-2024-ie00005.svg" width="18pt" height="17pt" src="ejm-36-267-2024-ie00005.png"/></svg:svg></span></span>Fe<span class="inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" id="M48" display="inline" overflow="scroll" dspmath="mathml"><mrow><msubsup><mi/><mn mathvariant="normal">0.34</mn><mrow><mn mathvariant="normal">3</mn><mo>+</mo></mrow></msubsup><msub><mo>)</mo><mrow><mi mathvariant="normal">Σ</mi><mn mathvariant="normal">1.00</mn></mrow></msub></mrow></math><span><svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="42pt" height="17pt" class="svg-formula" dspmath="mathimg" md5hash="e052b7d79f69e15a421fec742b5c78b6"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="ejm-36-267-2024-ie00006.svg" width="42pt" height="17pt" src="ejm-36-267-2024-ie00006.png"/></svg:svg></span></span> (PO<span class="inline-formula"><sub>4</sub></span>)<span class="inline-formula"><sub>4</sub></span> <span class="inline-formula"><sup><i>X</i></sup></span>[O<span class="inline-formula"><sub>0.87</sub></span>F<span class="inline-formula"><sub>0.53</sub></span>(OH)<span class="inline-formula"><sub>0.60</sub></span>]<span class="inline-formula"><sub>Σ2.00</sub></span>(H<span class="inline-formula"><sub>2</sub></span>O)<span class="inline-formula"><sub>10</sub></span> <span class="inline-formula">⋅</span> 4H<span class="inline-formula"><sub>2</sub></span>O.</p> <p>Macraeite has monoclinic symmetry with space group <span class="inline-formula"><i>P</i></span>2<span class="inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" id="M61" display="inline" overflow="scroll" dspmath="mathml"><mrow><msub><mi/><mn mathvariant="normal">1</mn></msub><mo>/</mo><mi>c</mi></mrow></math><span><svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="20pt" height="14pt" class="svg-formula" dspmath="mathimg" md5hash="18efce390d1a45e2eec99053bb843bb0"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="ejm-36-267-2024-ie00007.svg" width="20pt" height="14pt" src="ejm-36-267-2024-ie00007.png"/></svg:svg></span></span> and unit-cell parameters <span class="inline-formula"><i>a</i>=10.562(2)</span> Å, <span class="inline-formula"><i>b</i>=20.725(4)</span> Å, <span class="inline-formula"><i>c</i>=12.416(2)</span> Å, <span class="inline-formula"><i>β</i>=90.09(3)</span>°, <span class="inline-formula"><i>V</i>=2717.8(9)</span> Å<span class="inline-formula"><sup>3</sup></span>, and <span class="inline-formula"><i>Z</i>=4</span>. The crystal structure was refined using synchrotron single-crystal data to <i>wR</i><span class="inline-formula"><sub>obs</sub>=0.065</span> for 4990 reflections with <span class="inline-formula"><i>I</i><i>&gt;</i>3<i>σ</i>(<i>I</i>)</span>. Macraeite is isostructural with the paulkerrite-group minerals rewitzerite and paulkerrite, with ordering of K and H<span class="inline-formula"><sub>2</sub></span>O at different <span class="inline-formula"><i>A</i></span> sites (<span class="inline-formula"><i>A</i></span>1 and <span class="inline-formula"><i>A</i></span>2) of the general formula <span class="inline-formula"><i>A</i></span>1<span class="inline-formula"><i>A</i></span>2<span class="inline-formula"><i>M</i></span>1<span class="inline-formula"><sub>2</sub><i>M</i></span>2<span class="inline-formula"><sub>2</sub><i>M</i></span>3(PO<span class="inline-formula"><sub>4</sub></span>)<span class="inline-formula"><sub>4</sub><i>X</i><sub>2</sub></span>(H<span class="inline-formula"><sub>2</sub></span>O)<span class="inline-formula"><sub>10</sub></span> <span class="inline-formula">⋅</span> 4H<span class="inline-formula"><sub>2</sub></span>O, whereas in the orthorhombic member, benyacarite, K and H<span class="inline-formula"><sub>2</sub></span>O are disordered at a single <span class="inline-formula"><i>A</i></span> site.</p>https://ejm.copernicus.org/articles/36/267/2024/ejm-36-267-2024.pdf
spellingShingle I. E. Grey
C. Rewitzer
R. Hochleitner
A. R. Kampf
S. Boer
W. G. Mumme
N. C. Wilson
Macraeite, [(H<sub>2</sub>O)K]Mn<sub>2</sub>(Fe<sub>2</sub>Ti)(PO<sub>4</sub>)<sub>4</sub>[O(OH)](H<sub>2</sub>O)<sub>10</sub>&thinsp; ⋅ &thinsp;4H<sub>2</sub>O, a new monoclinic paulkerrite-group mineral, from the Cubos–Mesquitela–Mangualde pegmatite, Portugal
European Journal of Mineralogy
title Macraeite, [(H<sub>2</sub>O)K]Mn<sub>2</sub>(Fe<sub>2</sub>Ti)(PO<sub>4</sub>)<sub>4</sub>[O(OH)](H<sub>2</sub>O)<sub>10</sub>&thinsp; ⋅ &thinsp;4H<sub>2</sub>O, a new monoclinic paulkerrite-group mineral, from the Cubos–Mesquitela–Mangualde pegmatite, Portugal
title_full Macraeite, [(H<sub>2</sub>O)K]Mn<sub>2</sub>(Fe<sub>2</sub>Ti)(PO<sub>4</sub>)<sub>4</sub>[O(OH)](H<sub>2</sub>O)<sub>10</sub>&thinsp; ⋅ &thinsp;4H<sub>2</sub>O, a new monoclinic paulkerrite-group mineral, from the Cubos–Mesquitela–Mangualde pegmatite, Portugal
title_fullStr Macraeite, [(H<sub>2</sub>O)K]Mn<sub>2</sub>(Fe<sub>2</sub>Ti)(PO<sub>4</sub>)<sub>4</sub>[O(OH)](H<sub>2</sub>O)<sub>10</sub>&thinsp; ⋅ &thinsp;4H<sub>2</sub>O, a new monoclinic paulkerrite-group mineral, from the Cubos–Mesquitela–Mangualde pegmatite, Portugal
title_full_unstemmed Macraeite, [(H<sub>2</sub>O)K]Mn<sub>2</sub>(Fe<sub>2</sub>Ti)(PO<sub>4</sub>)<sub>4</sub>[O(OH)](H<sub>2</sub>O)<sub>10</sub>&thinsp; ⋅ &thinsp;4H<sub>2</sub>O, a new monoclinic paulkerrite-group mineral, from the Cubos–Mesquitela–Mangualde pegmatite, Portugal
title_short Macraeite, [(H<sub>2</sub>O)K]Mn<sub>2</sub>(Fe<sub>2</sub>Ti)(PO<sub>4</sub>)<sub>4</sub>[O(OH)](H<sub>2</sub>O)<sub>10</sub>&thinsp; ⋅ &thinsp;4H<sub>2</sub>O, a new monoclinic paulkerrite-group mineral, from the Cubos–Mesquitela–Mangualde pegmatite, Portugal
title_sort macraeite h sub 2 sub o k mn sub 2 sub fe sub 2 sub ti po sub 4 sub sub 4 sub o oh h sub 2 sub o sub 10 sub thinsp ⋅ thinsp 4h sub 2 sub o a new monoclinic paulkerrite group mineral from the cubos mesquitela mangualde pegmatite portugal
url https://ejm.copernicus.org/articles/36/267/2024/ejm-36-267-2024.pdf
work_keys_str_mv AT iegrey macraeitehsub2subokmnsub2subfesub2subtiposub4subsub4suboohhsub2subosub10subthinspthinsp4hsub2suboanewmonoclinicpaulkerritegroupmineralfromthecubosmesquitelamangualdepegmatiteportugal
AT crewitzer macraeitehsub2subokmnsub2subfesub2subtiposub4subsub4suboohhsub2subosub10subthinspthinsp4hsub2suboanewmonoclinicpaulkerritegroupmineralfromthecubosmesquitelamangualdepegmatiteportugal
AT rhochleitner macraeitehsub2subokmnsub2subfesub2subtiposub4subsub4suboohhsub2subosub10subthinspthinsp4hsub2suboanewmonoclinicpaulkerritegroupmineralfromthecubosmesquitelamangualdepegmatiteportugal
AT arkampf macraeitehsub2subokmnsub2subfesub2subtiposub4subsub4suboohhsub2subosub10subthinspthinsp4hsub2suboanewmonoclinicpaulkerritegroupmineralfromthecubosmesquitelamangualdepegmatiteportugal
AT sboer macraeitehsub2subokmnsub2subfesub2subtiposub4subsub4suboohhsub2subosub10subthinspthinsp4hsub2suboanewmonoclinicpaulkerritegroupmineralfromthecubosmesquitelamangualdepegmatiteportugal
AT wgmumme macraeitehsub2subokmnsub2subfesub2subtiposub4subsub4suboohhsub2subosub10subthinspthinsp4hsub2suboanewmonoclinicpaulkerritegroupmineralfromthecubosmesquitelamangualdepegmatiteportugal
AT ncwilson macraeitehsub2subokmnsub2subfesub2subtiposub4subsub4suboohhsub2subosub10subthinspthinsp4hsub2suboanewmonoclinicpaulkerritegroupmineralfromthecubosmesquitelamangualdepegmatiteportugal

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