Fluckite: Difference between revisions
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{{Infobox mineral |
{{Infobox mineral |
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| name = |
| name = Fluckite |
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| category = [[ |
| category = [[Arsenate minerals]] |
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| boxwidth = |
| boxwidth = |
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| boxbgcolor = |
| boxbgcolor = |
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| image = Fluckite (Sainte-Marie-aux-Mines)-Musée de minéralogie de Strasbourg.jpg |
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| imagesize = |
| imagesize = 260px |
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| caption = |
| caption = Fluckite from the Gabe-Gottes Mine |
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| formula = CaMnH<sub>2</sub>(AsO<sub>4</sub>)<sub> |
| formula = CaMnH<sub>2</sub>(AsO<sub>4</sub>)<sub>2</sub>·2(H<sub>2</sub>O) <ref name=mindat/> |
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| IMAsymbol = Fck<ref>{{Cite journal|last=Warr|first=L.N.|date=2021|title=IMA–CNMNC approved mineral symbols|journal=Mineralogical Magazine|volume=85|issue=3|pages=291–320|doi=10.1180/mgm.2021.43|bibcode=2021MinM...85..291W|s2cid=235729616|doi-access=free}}</ref> |
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| unit cell = |
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| molweight = |
| molweight = |
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| strunz = 8.CB.15 |
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| class = Pinacoidal ({{overline|1}}) <br/><small>(same [[H-M symbol]])</small> |
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| symmetry = ''P''{{overline|1}} |
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| unit cell = a = 8.459, b = 7.613 <br/>c = 6.968 [Å]; α = 82.21° <br/>β = 98.25°, γ = 95.86°; Z = 2 |
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| color = Colorless, Light to Dark Pink |
| color = Colorless, Light to Dark Pink |
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| habit = Crystals prismatic, typically radiating to spherulitic |
| habit = Crystals prismatic, typically radiating to spherulitic |
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| twinning = |
| twinning = |
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| cleavage = (010) |
| cleavage = (010) perfect, (100) good, (101) indistinct |
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| fracture = |
| fracture = |
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| tenacity = |
| tenacity = |
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| mohs = 3.5-4 |
| mohs = 3.5-4 |
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| luster = |
| luster = Subvitreous, waxy |
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| refractive = n<sub>α</sub> = 1.618 n<sub>β</sub> = 1.627 n<sub>γ</sub>= 1.642 |
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| refractive = translucent |
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| opticalprop = Biaxial (+), probable |
| opticalprop = Biaxial (+), probable |
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γ= 1.642 2V(meas.) = Very |
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large. |
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| pleochroism = |
| pleochroism = |
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| streak = |
| streak = White |
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| gravity = |
| gravity = 3.05 |
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| density = |
| density = |
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| melt = |
| melt = |
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| fusibility = |
| fusibility = |
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| diagnostic = |
| diagnostic = |
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| solubility = |
| solubility = |
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| diaphaneity = |
| diaphaneity = Translucent |
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| other = |
| other = |
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| references = <ref |
| references = <ref name=mindat>[http://www.mindat.org/min-1564.html Fluckite: mindat.org]</ref><ref name=webmineral>[http://www.webmineral.com/data/Fluckite.shtml Fluckite: webmineral.com]</ref><ref>{{usurped|1=[https://web.archive.org/web/20080829234331/http://www.mineralatlas.com/mineral%20general%20descriptions/F/fluckitepcd.htm Fluckite: Mineral Atlas]}}</ref><ref name=HBM>[http://www.handbookofmineralogy.com/pdfs/fluckite.pdf Fluckite: Handbook of Mineralogy]</ref> |
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⚫ | Fluckite's mineral crystallography is [[triclinic]] meaning it has three axis of different length and three different interior angles that do not equal 90°. Because fluckite possesses three axes with different angles and lengths it is an anisotropic mineral. This means that it has more than one optic axis. This mineral is a member of the P{{overline|1}} space group meaning that it can be rotated 360° degrees and inverted to obtain the original figure. Optically, this mineral has positive biaxial [[birefringence]], which can be shown obtaining an [[interference figure]] that is blue in the upper right and lower left quadrants of the figure while looking down the c- axis. Fluckite possesses moderate [[optical relief]] which is the degree to which the mineral stands out from the mounting medium.<ref name=mindat/> |
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==Occurrence== |
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'''Fluckite''' is named after the minerologist Pierre Fluck of [[Louis Pasteur University]] in Strasbourg, France.<ref name=Webmineral>[http://webmineral.com/data/Fluckite.shtml webmineral website]. Accessed September 16, 2010.</ref> |
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Fluckite was first described in 1980 for an occurrence in the Gabe-Gottes Mine in [[Haut-Rhin]], [[Alsace]], France,<ref name=mindat/><ref name=Fleischer>M. Fleischer, L.J. Cabri, G.Y. Chao, and A. Pabst (1980) New Mineral Names*, American Mineralogist, 65,1065-1070.</ref> and named for [[mineralogist]] Pierre Fluck of [[Louis Pasteur University]] in Strasbourg, France.<ref name=webmineral /> The mineral was found in at a depth of {{convert|100|m|abbr=on}}. It occurs as a post-mine phase on [[Carbonate mineral|carbonate]] [[gangue]].<ref name=Fleischer/> It occurs in association with native arsenic, [[tennantite]], [[skutterudite]], [[sainfeldite]], [[pharmacolite]], [[villyaellenite]], [[picropharmacolite]], [[calcite]], [[dolomite (mineral)|dolomite]], [[ankerite]] and [[quartz]].<ref name=HBM/> |
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==References== |
==References== |
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{{ |
{{Reflist}} |
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*M. Fleischer, L.J. Cabri, G.Y. Chao, A. Pabst (1980) New Mineral Names*, American Mineralogist, 65,1065-1070. |
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[[Category:Arsenate minerals]] |
[[Category:Arsenate minerals]] |
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[[Category: |
[[Category:Calcium minerals]] |
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[[Category: |
[[Category:Manganese(II) minerals]] |
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[[Category:Triclinic minerals]] |
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[[Category:Minerals in space group 2]] |
Latest revision as of 16:51, 22 September 2024
Fluckite | |
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General | |
Category | Arsenate minerals |
Formula (repeating unit) | CaMnH2(AsO4)2·2(H2O) [1] |
IMA symbol | Fck[2] |
Strunz classification | 8.CB.15 |
Crystal system | Triclinic |
Crystal class | Pinacoidal (1) (same H-M symbol) |
Space group | P1 |
Unit cell | a = 8.459, b = 7.613 c = 6.968 [Å]; α = 82.21° β = 98.25°, γ = 95.86°; Z = 2 |
Identification | |
Color | Colorless, Light to Dark Pink |
Crystal habit | Crystals prismatic, typically radiating to spherulitic |
Cleavage | (010) perfect, (100) good, (101) indistinct |
Mohs scale hardness | 3.5-4 |
Luster | Subvitreous, waxy |
Streak | White |
Diaphaneity | Translucent |
Specific gravity | 3.05 |
Optical properties | Biaxial (+), probable |
Refractive index | nα = 1.618 nβ = 1.627 nγ= 1.642 |
Birefringence | 0.024 |
2V angle | Large |
References | [1][3][4][5] |
Fluckite is an arsenate mineral with the chemical formula CaMnH2(AsO4)2·2(H2O).[1]
Fluckite's mineral crystallography is triclinic meaning it has three axis of different length and three different interior angles that do not equal 90°. Because fluckite possesses three axes with different angles and lengths it is an anisotropic mineral. This means that it has more than one optic axis. This mineral is a member of the P1 space group meaning that it can be rotated 360° degrees and inverted to obtain the original figure. Optically, this mineral has positive biaxial birefringence, which can be shown obtaining an interference figure that is blue in the upper right and lower left quadrants of the figure while looking down the c- axis. Fluckite possesses moderate optical relief which is the degree to which the mineral stands out from the mounting medium.[1]
Occurrence
[edit]Fluckite was first described in 1980 for an occurrence in the Gabe-Gottes Mine in Haut-Rhin, Alsace, France,[1][6] and named for mineralogist Pierre Fluck of Louis Pasteur University in Strasbourg, France.[3] The mineral was found in at a depth of 100 m (330 ft). It occurs as a post-mine phase on carbonate gangue.[6] It occurs in association with native arsenic, tennantite, skutterudite, sainfeldite, pharmacolite, villyaellenite, picropharmacolite, calcite, dolomite, ankerite and quartz.[5]
References
[edit]- ^ a b c d e Fluckite: mindat.org
- ^ Warr, L.N. (2021). "IMA–CNMNC approved mineral symbols". Mineralogical Magazine. 85 (3): 291–320. Bibcode:2021MinM...85..291W. doi:10.1180/mgm.2021.43. S2CID 235729616.
- ^ a b Fluckite: webmineral.com
- ^ Fluckite: Mineral Atlas[usurped]
- ^ a b Fluckite: Handbook of Mineralogy
- ^ a b M. Fleischer, L.J. Cabri, G.Y. Chao, and A. Pabst (1980) New Mineral Names*, American Mineralogist, 65,1065-1070.