Ganophyllite: Difference between revisions

Ganophyllite
Ganophyllite
General
Category	Mineral
Formula; (repeating unit)	(K,Na,Ca)2Mn8(Si,Al)12(O,OH)32 · 8H2O
Strunz classification	09.EG.30
Dana classification	74.01.02.01
Crystal system	Monoclinic
Crystal class	Prismatic (2/m)
Space group	A2/a
Unit cell	22,545.01 Å³
Identification
Formula mass	1,514.2
Color	Brownish yellow to cinnamon brown
Crystal habit	Foliated micaceous
Cleavage	{???}Perfect
Fracture	Brittle
Mohs scale hardness	4 - 4.5
Luster	Vitreous
Streak	Brownish yellow
Diaphaneity	Transparent to transculent
Specific gravity	2.84
Density	2.84
Optical properties	Biaxial(-)
Refractive index	nα = 1.537 nβ = 1.611 nγ = 1.613
Birefringence	0.076
Pleochroism	X = Pale yellow brown Y = Dark yellow brown Z = Dark yellow brown.
Dispersion	Weak
Ultraviolet fluorescence	Non-fluorescent
Common impurities	Fe, Zn, Pb, Ca, Ba
Other characteristics	Radioactive 3.87% (K)

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Revision as of 14:45, 18 October 2021

Ganophyllite's is a phyllosilicate mineral, which's name came from the greek words leaf (φύλλον) and luster (γανωμα). The latter one is due to the lustrous cleavages. It got named by Axel Hamberg in 1890. It got approved by the IMA in 1959, and it is a grandfathered mineral, meaning its name is still believed to refer to an existing species til this day.^[1] Tamaite is the calcium analogue, while eggletonite is the natrium analogue of said mineral.^[2]

Properties

It is a member of ganophyllite group, among with eggletonite and tamaite, and it is the potassium variety of eggletonite.^[1] The formula includes potassium (K) if it is ganophyllite, eggletonite includes natrium (Na), and tamaite includes calcium (Ca) in their formula. It is pleochroic, which means the gem's color changes depending on the axis it is seen on, which is an optical phenomenon. On the X axis, it is seen in a pale yellow-brown color, and on the Y and Z axis, it can be seen as a dark yellow-brown gem. It has a barely detectable potassium radioactivity. It has a barely detectable 1.8% radiation measured by GRapi (Gamma Ray American Petroleum Institute Units). It mostly consists of oxygen (47.02%), manganese (21.77%) and silicon (16.69%), but otherwise contains aluminium (5.88%), potassium (3.87%), which gives ganophyllite its irradiative attributes, magnesium (2.41%), hydrogen (1.6%) and sodium (0.76%).^[3]

Distribution

It can also be found in the Benallt mine as well. Ganophyllite occurs in metamorphosed manganese deposits, especially in zinc-manganese ones. It's a type locality of the Harstigen mine in Sweden, although the first specimen was found iat the Nant mine, Wales.^[2] Other finding places include Molinello and Gambatesa mines in Italy, Maple-Hovey deposits in America, at Franklin, New Jersey, at Mont Saint-Hilaire, Canada. Asian mines include the Kumahata mine, the Noda-Tamagawa mine, the Ananai mine, and the Osu and Yonoyama mines, Japan. It can be found at the Broken hill in Australia as well.^[4]

Associated minerals

Ganophyllite has a lot of minerals associated with it, although most of it is mine specific. In each mine, the minerals associated with ganophyllite may vary.

In the Harstigen mine, the associated minerals are the followings: pyrophanite, caryopilite, calcite, garnet, rhodonite, barite, lead, and manganoan biotite.

The following associated minerals can occur with specimens from Franklin: axinite, rhodonite, datolite, willemite, roeblingite, bustamite, charlesite and clinohedrite.

Ganophyllites from the Molinello mine have the following associated minerals: caryopilite and parsettensite.^[4]

References

^ ^a ^b "Ganophyllite". www.mindat.org. Retrieved 2021-06-22.
^ ^a ^b "Mineral Database - Mineralogy of Wales". National Museum Wales. Retrieved 2021-10-18.
^ "Ganophyllite Mineral Data". webmineral.com. Retrieved 22 January 2021.
^ ^a ^b "Ganophyllite" (PDF). Handbook of Mineralogy.

[:0-1] "Ganophyllite". www.mindat.org. Retrieved 2021-06-22.

[:1-2] "Mineral Database - Mineralogy of Wales". National Museum Wales. Retrieved 2021-10-18.

[3] "Ganophyllite Mineral Data". webmineral.com. Retrieved 22 January 2021.

[:2-4] "Ganophyllite" (PDF). Handbook of Mineralogy.

[1]

[2]

[3]

[4]

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-{{more footnotes|date=January 2021}}
 {{Infobox mineral|boxbgcolor=#c79327|name=Ganophyllite|formula=(K,Na,Ca)<sub>2</sub>Mn<sub>8</sub>(Si,Al)<sub>12</sub>(O,OH)<sub>32</sub> · 8H<sub>2</sub>O|strunz=09.EG.30|system=[[Monoclinic]]|dana=74.01.02.01|class=[[Prismatic]] (2/m)|symmetry=A2/a|unit cell=22,545.01 Å³|molweight=1,514.2|color=Brownish yellow to cinnamon brown|habit=Foliated micaceous|cleavage={???}Perfect|fracture=Brittle|mohs=4 - 4.5|luster=Vitreous|opticalprop=Biaxial(-)|refractive=n<sub>α</sub> = 1.537 n<sub>β</sub> = 1.611 n<sub>γ </sub>= 1.613|birefringence=0.076|pleochroism=X = Pale yellow brown
 Y = Dark yellow brown
 Z = Dark yellow brown.|dispersion=Weak|fluorescence=Non-fluorescent|streak=Brownish yellow|gravity=2.84|density=2.84|diaphaneity=Transparent to transculent|impurities=Fe, Zn, Pb, Ca, Ba|other=[[Image:Radioactive.svg|25px]] [[Radioactive]] 3.87% (K)}}
-'''Ganophyllite'''<nowiki/>'s is a [[phyllosilicate mineral]], whose name came from the Greek words leaf (φύλλον) and luster (γανωμα). It got named after Axel Hamberg in 1890. It is a member of Ganophyllite group, among with [[eggletonite]] and [[tamaite]], and it is the potassium variety of eggletonite.<ref>{{Cite web|title=Ganophyllite|url=https://www.mindat.org/min-1649.html|access-date=2021-06-22|website=www.mindat.org}}</ref> It has a barely detectable potassium radioactivity. The formula includes potassium (K) if it is ganophyllite, eggletonite includes natrium (Na), and tamaite includes calcium (Ca) in their formula. It is pleochroic, which means the gem's color changes depending on the axis it is seen on, which is an optical phenomenon. On the X axis, it is seen in a pale yellow-brown color, and on the Y and Z axis, it can be seen as a dark yellow-brown gem. It has a barely detectable 1.8% radiation measured by GRapi (Gamma Ray American Petroleum Institute Units). It mostly consists of oxygen (47.02%), manganese (21.77%) and silicon (16.69%), but otherwise contains aluminium (5.88%), potassium (3.87%), which gives ganophyllite its irradiative attributes, magnesium (2.41%), hydrogen (1.6%) and sodium (0.76%).<ref>{{cite web |title=Ganophyllite Mineral Data |url=http://webmineral.com/data/Ganophyllite.shtml#.YApyD5MzZQI |website=webmineral.com |access-date=22 January 2021}}</ref>
+'''Ganophyllite'''<nowiki/>'s is a [[phyllosilicate mineral]], which's name came from the greek words leaf (φύλλον) and luster (γανωμα). The latter one is due to the lustrous cleavages. It got named by Axel Hamberg in 1890. It got approved by the [[International Mineralogical Association|IMA]] in 1959, and it is a grandfathered mineral, meaning its name is still believed to refer to an existing species til this day.<ref name=":0" /> Tamaite is the calcium analogue, while eggletonite is the natrium analogue of said mineral.<ref name=":1">{{Cite web|title=Mineral Database - Mineralogy of Wales|url=https://museum.wales/mineralogy-of-wales/database/?mineral=372&name=Ganophyllite|access-date=2021-10-18|website=National Museum Wales|language=en}}</ref>
+== Properties ==
+It is a member of ganophyllite group, among with [[eggletonite]] and [[tamaite]], and it is the potassium variety of eggletonite.<ref name=":0">{{Cite web|title=Ganophyllite|url=https://www.mindat.org/min-1649.html|access-date=2021-06-22|website=www.mindat.org}}</ref> The formula includes potassium (K) if it is ganophyllite, eggletonite includes natrium (Na), and tamaite includes calcium (Ca) in their formula. It is pleochroic, which means the gem's color changes depending on the axis it is seen on, which is an optical phenomenon. On the X axis, it is seen in a pale yellow-brown color, and on the Y and Z axis, it can be seen as a dark yellow-brown gem. It has a barely detectable potassium radioactivity. It has a barely detectable 1.8% radiation measured by GRapi (Gamma Ray American Petroleum Institute Units). It mostly consists of oxygen (47.02%), manganese (21.77%) and silicon (16.69%), but otherwise contains aluminium (5.88%), potassium (3.87%), which gives ganophyllite its irradiative attributes, magnesium (2.41%), hydrogen (1.6%) and sodium (0.76%).<ref>{{cite web |title=Ganophyllite Mineral Data |url=http://webmineral.com/data/Ganophyllite.shtml#.YApyD5MzZQI |website=webmineral.com |access-date=22 January 2021}}</ref>
+== Distribution ==
+It can also be found in the Benallt mine as well. Ganophyllite occurs in metamorphosed manganese deposits, especially in zinc-manganese ones. It's a type locality of the Harstigen mine in Sweden, although the first specimen was found iat the Nant mine, Wales.<ref name=":1" /> Other finding places include Molinello and Gambatesa mines in Italy, Maple-Hovey deposits in America, at Franklin, New Jersey, at Mont Saint-Hilaire, Canada. Asian mines include the Kumahata mine,  the Noda-Tamagawa mine, the Ananai mine, and the Osu and Yonoyama mines, Japan. It can be found at the Broken hill in Australia as well.<ref name=":2">{{Cite journal|title=Ganophyllite|url=http://www.handbookofmineralogy.org/pdfs/ganophyllite.pdf|journal=Handbook of Mineralogy}}</ref>
+== Associated minerals ==
+Ganophyllite has a lot of minerals associated with it, although most of it is mine specific. In each mine, the minerals associated with ganophyllite may vary.
+In the Harstigen mine, the associated minerals are the followings: [[pyrophanite]], [[caryopilite]], [[calcite]], [[garnet]], [[rhodonite]], [[barite]], [[lead]], and [[Biotite|manganoan biotite]].
+The following associated minerals can occur with specimens from Franklin: [[axinite]], rhodonite, [[datolite]], [[willemite]], [[roeblingite]], [[bustamite]], [[charlesite]] and [[clinohedrite]].
+Ganophyllites from the Molinello mine have the following associated minerals: caryopilite and [[parsettensite]].<ref name=":2" />
 == References ==