Anorthite from
Khungtukun Massif, Malaya Romanikha River, Khatanga, Taimyr Peninsula, Taymyrskiy Autonomous Okrug, Krasnoyarsk Krai, Russia

Locality type:

Massif

Classification

Species:

Anorthite

Formula:

Ca(Al₂Si₂O₈)

Comments:

The plagioclase in the gabbro grades from labradorite (~An69) in the cores to andesine (~An39) in the rims. The close proximity of the core plagioclase composition to the labradorite-bytownite nomenclature boundary suggests that with a bit of additional searching, slightly more Ca-rich zones that would normalize to bytownite could likely be discovered.

Confirmation

Validity:

Confirmed

Confirmation Methods:

EPMA

Data

Mineral Data:

Click here to view Anorthite data

Locality Data:

Click here to view Khungtukun Massif, Malaya Romanikha River, Khatanga, Taimyr Peninsula, Taymyrskiy Autonomous Okrug, Krasnoyarsk Krai, Russia

Data Identifiers

Mindat Occurrence Record ID:

1298718

Long-form Identifier:

1:3:1298718:2

GUID (UUID V4):

545e209a-37de-47e1-bc56-a1aecca40ba7

References

Frank K. Mazdab collection (see https://www.rockptx.com/fkm-226-to-fkm-250/#FKM-226 for normalized analyses)

Reference Search (possible matching items)

	*Hazen, Robert M., Jones, Adrian P., Baross, John A. - Eds.* (2013) Carbon in Earth. Reviews in Mineralogy and Geochemistry Vol. 75. Mineralogical Society of America**	Report (volume)
	meetings in Bejing, China (2010), Novosibirsk, Russia (2011), and Washington, DC (2012), as well as more...Ferry JM (1992) Regional metamorphism of the Waits River Formation, eastern Vermont: delineation of a new...K, M Russia R1 Khungtukun Massif, Khatanga, Siberia R2 Coal Mine 45, Kopeisk, Urals R3 Is River, Isovsky...Ir-Tash Stream Basin, Tashkent Viloyati U2 Koshmansay River, Tashkent Viloyati K K, M China C2 Fuxian kimberlite...Henan Prov. R4 R5 R6 R7 Verkhneivinsk, Neiva River, Urals Billeekh intrusion, Saha Rep., Siberia Avacha

Anorthite from Khungtukun Massif, Malaya Romanikha River, Khatanga, Taimyr Peninsula, Taymyrskiy Autonomous Okrug, Krasnoyarsk Krai, Russia

Anorthite from
Khungtukun Massif, Malaya Romanikha River, Khatanga, Taimyr Peninsula, Taymyrskiy Autonomous Okrug, Krasnoyarsk Krai, Russia