ampangabeite | Ampangabéite: Mineral information, data and locali

Keyword	CPC	PCC	Volume	Score	Length of keyword
ampangabeite	1.12	0.2	8148	47	12

Keyword	CPC	PCC	Volume	Score
ampangabeite	1.37	0.3	852	19

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Ampangabéite: Mineral information, data and localities. - mindat.org
mindat.org

https://www.mindat.org/min-8409.html

WebFormula: (Y,Fe3+,Fe2+,U,Th,Ca)2(Nb,Ta)2O8. Name: After the locality at Ampangabé, Madagascar. Synonym: A synonym of Samarskite- (Y) First described as a new mineral, an U-REE niobotantalate related to samarskite- (Y) by the French mineralogist Alfred Lacroix in 1912. Now discredited.

DA: 34 PA: 76 MOZ Rank: 40

Ampangabé pegmatite, Miandrarivo, Faratsiho ... - mindat.org
mindat.org

https://www.mindat.org/gl/2253

WebAmpangabé pegmatite, Miandrarivo, Faratsiho, Vakinankaratra, Madagascar. 1.8 x 1.0 x 0.7 cm. Ampangabeite is the old name for a discredited species that was first discovered at this locality and described in 1912 by Alfred Lacroix. Today, all of the ampangabeites are samarksite-(Y), the Y analogue of samarskite-(Yb).

DA: 55 PA: 70 MOZ Rank: 75

Ampangabéite: Mineral information, data and localities.
mindat.org

https://zh.mindat.org/min-8409.html

WebFormula: (Y,Fe3+,Fe2+,U,Th,Ca)2(Nb,Ta)2O8. Name: After the locality at Ampangabé, Madagascar. Synonym: A synonym of Samarskite- (Y) First described as a new mineral, an U-REE niobotantalate related to samarskite- (Y) by the French mineralogist Alfred Lacroix in 1912. Now discredited.

DA: 93 PA: 73 MOZ Rank: 13

IDENTIFICATION AND ALTERATION TRENDS OF GRANITIC …
geoscienceworld.org

https://pubs.geoscienceworld.org/canmin/article-abstract/43/4/1291/126619/IDENTIFICATION-AND-ALTERATION-TRENDS-OF-GRANITIC

WebAug 1, 2005 · For this reason, it has been historically difficult to determine the exact nature of “viethofingite”, “hjelmite” and “ampangabeite”; all are shown to be altered varieties of samarskite-group minerals. Yttrotantalite-(Y) is shown to be a member of the samarskite group, not the fergusonite group.

DA: 25 PA: 59 MOZ Rank: 36

Geology of bastnaesite and monazite deposits in the Ambatofinandrahana
sciencedirect.com

https://www.sciencedirect.com/science/article/pii/S1464343X13002185

WebJun 1, 2014 · Bastnaesite and monazite deposits of the Ambatofinandrahana region of Madagascar are closely associated to an alkaline to peralkaline complex of Panafrican age (∼540–570 Ma; Ambalavao suite), composed essentially of syenite and granite that intrude Paleoproterozoic Itremo Group metasediments, orthogneiss and metagabbro of the …

DA: 53 PA: 42 MOZ Rank: 78

(PDF) Identification and alteration trends of granitic
researchgate.net

https://www.researchgate.net/publication/228492836_Identification_and_alteration_trends_of_granitic-pegmatite-hosted_YREEUTh-NbTaTi_oxide_minerals_A_statistical_approach

WebPDF | The (YREE,U,Th)- (Nb,Ta,Ti) oxide minerals in REE-enriched granitic pegmatite and A- and I-type granites are primarily comprised of the... | Find, read and cite all the research you need on...

DA: 44 PA: 42 MOZ Rank: 6

IDENTIFICATION AND ALTERATION TRENDS OF …
rruff.info

https://rruff.info/doclib/cm/vol43/CM43_1291.pdf

Web“viethoﬁ ngite”, “hjelmite” and “ampangabeite”; all are shown to be altered varieties of samarskite-group minerals. Yttrotantalite-(Y) is shown to be a member of the samarskite group, not the fergusonite group.

DA: 30 PA: 40 MOZ Rank: 33

ampangabeite | SpringerLink
springer.com

https://link.springer.com/referenceworkentry/10.1007/978-3-540-72816-0_824

Web978-3-540-72795-8. Online ISBN. : 978-3-540-72816-0. eBook Packages. : Earth and Environmental Science Reference Module Physical and Materials Science.

DA: 52 PA: 36 MOZ Rank: 23

COMPARATIVE STUDY OF AMPANGABEITES AND …
osti.gov

https://www.osti.gov/biblio/4663810

WebThis study was done on various samples of ampangabeite and samarskites mostly by the combined x-ray diffractionfluorescence method and also by differential thermal analyses. The x-ray fluorescence analysis was used for the determination of the chemical composition of these metamict minerals.

DA: 88 PA: 87 MOZ Rank: 55

Chapter 108 Crystal structures of rare earth minerals
sciencedirect.com

https://www.sciencedirect.com/science/article/pii/S0168127305800194

WebJan 1, 1993 · The rare earth minerals are defined as minerals containing rare earth elements as essential constituents. However, to judge this criterion, it is necessary to obtain structural as well as compositional information about the mineral.

DA: 16 PA: 17 MOZ Rank: 38