Hydroxylclinohumite from
Cima di Gagnone, Ticino, Switzerland

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Classification

Species:

Hydroxylclinohumite

Formula:

Mg₉(SiO₄)₄(OH)₂

Comments:

Titanian hydroxylclinohumite occurs predominantly in the central parts of olivine megacrysts. Olivine and hydroxylclinohumite are intergrown and forms irregular polysynthetic twins and cannot readily be distinguished. The hydroxylclinohumite contains up to .318 apfu Ti, and appreciable amounts of F (up to 2.12 wt %), yet still well within the chemical boundaries of hydroxylclinohumite.

Confirmation

Validity:

Believed Valid

Data

Mineral Data:

Click here to view Hydroxylclinohumite data

Locality Data:

Click here to view Cima di Gagnone, Ticino, Switzerland

Data Identifiers

Mindat Occurrence Record ID:

1465579

Long-form Identifier:

1:3:1465579:1

GUID (UUID V4):

0f2be5b9-ddf4-434f-a1b1-e06baacd8bbf

References

Scambelluri, M., Pettke, T., Rampone, E., Godard, M., & Reusser, E. (2014). Petrology and trace element budgets of high-pressure peridotites indicate subduction dehydration of serpentinized mantle (Cima di Gagnone, Central Alps, Switzerland). Journal of Petrology, 55(3), 459-498.

Reference Search (possible matching items)

	Scambelluri, Marco, Cannaò, Enrico, Gilio, Mattia (2019) The water and fluid-mobile element cycles during serpentinite subduction. A review. European Journal of Mineralogy, 31 (3) 405-428 doi:10.1127/ejm/2019/0031-2842	Journal (article/letter/editorial)
	GILIO4 1 Dipartimento di Scienze della Terra, Ambiente e Vita, Università di Genova, C.so Europa 26...scambelluri@dipteris.unige.it 2 Dipartimento di Scienze della Terra “A. Desio”, Università di Milano, Via S. Botticelli...Istituto di Geoscienze e Georisorse, CNR, Via G. Moruzzi 1, 56124 Pisa, Italy 4 Dipartimento di Scienze...Scienze della Terra e dell’Ambiente, Università di Pavia, Via A. Ferrata 1, 27100 Pavia, Italy Abstract: The...localities (Betic Cordillera, Spain; Central Alps, Switzerland) indicate that rocks record comparable subduction
	YANG, J-J., POWELL, R. (2008) Ultrahigh-pressure garnet peridotites from the devolatilization of sea-floor hydrated ultramafic rocks. Journal of Metamorphic Geology, 26 (6) 695-716 doi:10.1111/j.1525-1314.2008.00780.x	Journal (article/letter/editorial)
	containing the garnet–olivine assemblage at Cima di Gagnone, Switzerland, based on the occurrence of Ti-clinohumite... 1978. Petrogenesis of garnet lherzolite, Cima di Gagnone, Lepontine Alps. Earth and Planetary Science...Trommsdorff, V. & Evans, B. W., 1980. Titanian hydroxylclinohumite: formation and breakdown in antigorite rocks
	Wu, Jia, Koga, Kenneth T. (2013) Fluorine partitioning between hydrous minerals and aqueous fluid at 1GPa and 770–947°C: A new constraint on slab flux. Geochimica et Cosmochimica Acta, 119. 77-92 doi:10.1016/j.gca.2013.05.025	Journal (article/letter/editorial)
	the maximum XF 623 of clinohumite from Cima di Gagnone was as high as 0.29 (Evans and Trommsdorf,...Gekimyants, V.M. and Spiridonov, E.M. (2000) Hydroxylclinohumite, a new member of the humite group: Twinning
	*Carlson, R. W. - Ed.* (2005) Treatise on Geochemistry - The Mantle and Core Vol. 2 - Treatise on Geochemistry. Elsevier, Amsterdam.**	Book
	(1978) Petrogenesis of garnet lherzolite, Cima di Gagnone, Lepontinbe Alps. Evans B. W., Trommsdorff...eclogite-metarodingite suite at Cima di Cagnone, Ticino, Switzerland. Am. Mineral. 64, 15—31. Evans B...Structural Arami petrology (Ticino, of the garnet- Switzerland). Leidse Geologische Mededelingen...(1969) The structure and metamorphism in the Stura di Lanzo region. Piedmont Alps. Schweizer. Mineral....ultramafic-mafic-carbonate suite of Cima Lunga-Adula, Central Alps: excursions to Cima di Cagnone and Alpe Arami.
	*(ed.), Davis A.M., (ed.), Holland H.D., (ed.), Turekian K.K. (2003) Treatise on Geochemistry* - Meteorites, Comets and Planets Vol. 1 - Treatise on Geochemistry. Elsevier, Amsterdam.**	Book
	Chr (0.1%) Ol (23 wt.%, Fa4), Px (14%, Fs6Wo1), Cr-Di (15%, Fs3Wo47), Pl (15%, An14Ab82), Grph (27%), Tr...vol.%, Fo99 – 100), En (30%, 0.5– 21 wt.% Al2O3), Di (3%, 5 –18 wt.% Al2O3), Pl, Sp, Brz Refs. Anomalous...Cl-apatite; Cpx ¼ clinopyroxene; Daub ¼ daubreelite; Di ¼ diopside; Grph ¼ graphite; Ilm ¼ ilmenite; Ks ¼...Grs ¼ grossite, Cor ¼ corundum, Cord ¼ cordierite, Di ¼ diopside, Fo ¼ forsterite, Geh ¼ gehlenite, Hib...in red. Abbreviations: An—anorthite; Cor—corundum; Di—diopside; Fo—forsterite; Geh—gehlenite; Gro—grossite;

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Hydroxylclinohumite from Cima di Gagnone, Ticino, Switzerland

Hydroxylclinohumite from
Cima di Gagnone, Ticino, Switzerland