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Nepheline-syenite from
Ampasibitika, Antsirabe, Ambanja, Diana, Madagascar


Locality type:Exploration Area
Classification
Type:Nepheline-syenite
Age information
Maximum recorded age:24.2 ± 0.6 Ma
Minimum recorded age:24.2 ± 0.6 Ma
Rock units:
UnitRecorded ageGeologic TimeDating methodReference
Nepheline-syenite24.2 ± 0.6 MaOligoceneU-Pb dating of zircon Estrade, G., B
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Nepheline-syenite data
Locality Data:Click here to view Ampasibitika, Antsirabe, Ambanja, Diana, Madagascar
Data Identifiers
Mindat Occurrence Record ID:1234311
Long-form Identifier:1:3:1234311:1
GUID (UUID V4):f7fb1832-aef6-471f-82a0-d78ee3dde0e7
Nearest other occurrences of Nepheline-syenite
9.9km (6.1 miles) Ambohimirahavavy Alkaline Complex, Antsirabe, Ambanja, Diana, Madagascar
33.0km (20.5 miles) Ankitsika Complex, Analalava District, Sofia, Madagascar
41.2km (25.6 miles) Ampangorinana, Nosy Komba, Nosy Be, Diana, Madagascar
References
Reference Search (possible matching items)
Journal (article/letter/editorial)
Mineralization in the Ambohimirahavavy Alkaline Complex, Madagascar Guillaume Estrade,1 Stefano Salvi,1,† Didier...Cenozoic Ambohimirahavavy alkaline complex in Madagascar consists of several syenitic to granitic intrusions...intrusions (24.2 ± 0.6 Ma) the largest of which, the Ampasibitika intrusion, is characterized by the presence...alkaline complex, located in the northwest of Madagascar, has been the subject of a recent publication...40 km south of Nosy Be Island, in northwestern Madagascar (Figs. 1a-b), and is part of a NW-SE–trending
Journal (article/letter/editorial)
Nigeria : ffigirine-riebeekite granite3. 4 Ampasibitika, Madagascar: regirine-riebeekite granite. 6 Although...between adjacent individuals. F I G . 2.—Nepheline Syenite (Foyaite), near kilometre 24, on the road...do Itombe to Bango, Loanda, Angola ; showing nepheline (clear except along cracks) and orthoclase (cloudy)...bordered with hastingsite and sphene. F I G . 3.—Nepheline Monchiquite, near kilometre 20, on the Senza-Bango...clear groundmass of nepheline and of what is probably analcime. FIG. 4.—Nepheline Phenolite, near kilometre
Book
their accompanying Dykes of Alkali 62 Nepheline Syenite Alkali Granites. a. The first boss on ...Alkali Granites Petrographical 70 ... 75 Nepheline Syenites a. /5. 8. The Canadites The Foyaite...Fig. 2. Weathered surface of nepheline-syenite on nepheline-syenite on Koedoeslaagte. XIV Weathered... Koedoeslaagte. arrangement of aegirine in nepheline, Koedoeslaagte. XVI. Fig. 1. Xenolith of quartzite...boss of the alkali-granite and dykes of nepheline-syenite on Schurve- draai made and Koedoeslaagte
Book
petrography of the interesting and unique nepheline syenite massif of Ditro in Transylvania, on which...monzonite must have the same status as quartz-syenite to syenite and quartz-diorite to diorite. On this critical...names for the various “foid” root names, e.g. nepheline syenite; and 34 are rock terms. The Bibliography has18...scapolite F = feldspathoids or foids including nepheline, leucite, kalsilite, analcime, sodalite, nosean...names have been given, e.g. limburgite = hyalo-nepheline basanite (6) the prefix micro- should be used
Book
granite must have quartz and potassic feldspar, syenite must have potassic feldspar, limestone must have...name, for example, biotite granite, hornblende syenite, bituminous limestone, siliceous (quartz) dolomite...appropriate modifiers. For example, root names like syenite, shale, sandstone, slate, and schist can be modified...modified to describe rocks like corundum syenite, phosphatic shale, feldspathic sandstone, chiastolite...so they can be applied to different rocks: from syenite are syenitite, syenitoid, syenoid, syenodiorite
Journal (issue)
transparent scapolites from Mozambique a n d Madagascar. It is interesting to compare their results with...one from Madagascar a n d one from an unknown locality. Those from Mozambique a n d Madagascar are described... 6 1-3821 1-3655 8 26 1-1602 11193 10349 Madagascar Bank a n d N u b e r 1970 I d obs* 609 4-422...h e eudialyte is embedded in white grains of nepheline a n d some felspar. T h e black mineral is arfvedsonite...occurrences. Eudialyte is present in the three nepheline-syenites, which N. V. Ussing (1864-1911) named
Book (edition)
Quartz Opal, some yellow varieties of sphalerite Nepheline Tale, brucite Sillimanite such terms as The...Mineralogical Magazine A. LaCroix, Mineralogie de Madagascar, 1922 P. Embry and Fuller Manual of New Mineral...Brazil, and Czech Republic; minor deposits in Madagascar, Turkey, Romania, Germany, Austria, and Sri Lanka... near Narssaq, Greenland, in vein in sodalite syenite; Langban and Langsjon, Sweden, in mineralized dolomite;...Llallagua, Biggenden mine, Q, Australia; Fefena, Madagascar; P&J:92, R:710, other localities in Bolivia.
Book (volume)
Resinous, luster of yellow resins. Greasy, like nepheline or cerargyrite. Pearly, like pearl. Silky, fibrous...1910; 5, 1913; Paris. (1922-1923). Mineralogie de Madagascar. 3 volumes: vols. 1, 2, 1922; 3, 1923; Paris...field, Auckland. placers on the east coast of Madagascar from north of Fenerive south to the neighborhood...anhydrite cap rock of the Winnfield salt dome. nepheline cutting vein in a calcite with it occurs near...Queen Island, Alder on Ontario; region, Superior syenite; in the Lake Found in many Charlotte Islands
 
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