Aldan

This is a comprehensive list of alkaline localities in the Aldan area, mostly, but not only (don´t underestimate me !), taken from the Woolley book (see below), generously given to me for 3 months by Peter G.Seroka - many thanks ! Btw - most of the information not from the book is from P.G.Seroka himself. The mineral lists are certainly incomplete.

Murun (Malomurunskii, Bolshemurunskii, Dogaldynskii) and Inagli see separate page.

Molbo: Lamproite dyke. Amphibole grp., apatite grp., biotite, chlorite grp., clinopyroxene, leucite, magnetite, olivine, phlogopite.

Khani: Ultrabasic lamproites in phlogopite pyeoxenites. Diopside, olivine, phlogoptie.

Yuzhnosakunskii (=Sakun): 10km². Pulaskite, alkaline syenite, nepheline syenites, pyroxenite, pseudoleucite. Aegirine, diopside, garnet grp., kalsilite, lepidomelane, microcline, nepheline, orthoclase.

Dzhangylakh: 4km in diameter. Malignites, larvikites, syenite porphyry. Aegirine, aegirine-augite, apatite grp., anorthoclase, arfvedsonite, biotite, garnet grp., magnetite, nepheline, riebeckite, titanite.

Yagodka Pipe: Ultrabasic lamproites.

Anomaly 4B Pipe: Lucitites as breccia.

Kaila Pipe: Breccia pipe of lamproite. Diopside, feldspar grp., olivine, phlogopite, saponite, talc, vermiculite.

Onye: 4 bodies on 20km². Syenites, tinguaite. Aegirine, aegirine-augite.

Lyzhnaya Pipe: Breccia pipe, lamproites. Diopside, feldspar grp., olivine, phlogopite, saponite, talc.

Ryabinovyi: 50km2. Alaklaine, peralkaline trachytes, phonolite, aegirine syenite, pulaskite, nepheline syenite, syenite porphyries. Aegirine, albite, apatite grp., biotite, feldspar grp., fluorite, garnet grp., ilmenite, magnetite, nepheline, quartz, titanite, xenotime.

Ryabinovaya Pipe: Breccia of alkaline syenite in lamproite. Biotite, diopside, olivine.

Yukhukhtinskii: Laccolith of aegirine syenites, pulaskite.

Strelka: Nepheline syenite. Aegirine, aegirine-augite, albite, anatase, apatite grp., baddeleyite, eudialyte, garnet grp., labuntsovite, lamprophyllite, lomonosovite, loparite-(Ce), magnetite, nepheline, ramsayite, rinkolite, titanite, zircon, „sulfides“.

Tommot: Oeralkaline trachytic lavas and ignimbrites, peralkaline syenites, larvikites, nepheline syenites, pegmatites. Amphibole grp., apatite grp., baddeleyite, biotite, clinopyroxene, feldspar grp., innelite, labuntsovite, lomonosovite, loparite-(Ce), magnetite, plagioclase, quartz, rinkolite, rutile, titanite, zircon, „sulfides“.

seligdar: Syenite porphyry, shonkinite. Albite, allanite, apatite grp., biotite, calcite, chalcopyrite, chlorite grp., dolomite, epidote, galena, hematite, ilmenite, magnesite, magnetite, monazite, orthoclase, phengite, phlogopite, plagioclase, pyrite, quartz, rutile, serpentine grp., titanite, topaz, tourmaline, zircon. Apatite mining.

Yakokut: 28km2. Leucitite, lavas, phonolite, lamproites, alkaline to peralkaline syenites. Aegirine, albite, diopside, olivine, orthoclase, phlogopite, salite.

Mrachnaya Pipe: Breccias, lamproite. Armalcolite, ilmenite, magnetite, olivine, phlogopite, rutile.

Rododendron: Shonkinite, syenites. Aegirine, albite, apatite grp., arfvedsonite, augite, biotite, fluorite, hornblende, leucite, magnetite, muscovite(sericite), nepheline, olivine, orthoclase, perthite, phlogopite, plagioclase, pyrite, salite, titanite, zircon.

Zarya: Shonkinite, syenite.

Dzhekonda(=Dzhekondinskii): 4.5km in diameter. Peralkaline trachytes, melanite syenites. Aegirine-augite, albite, amphibole grp., andesine, apatite grp., augite, baddeleyite, biotite, bytownite, corundum, fluorite, hornblende, lamprophyllite, magnetite, melanite, microcline, nepheline, oligoclase, plagioclase, rutile, titanite, zircon.

Yllymakh: 40km². Phonolites, peralkaline trachytes, syenites, monzonites, nepheline syenites a.o.. Aegirine, albite, eudialyte, labuntsovite, lamprophyllite, lomonosovite, loparite-(Ce), microcline, nepheline, orthoclase, rinkolite, rosenbuschite, zeolite grp.

Lomam: Stocks an 1.5km². Calc-alkaline granite and syenite, shonkinite a.o.. Amphibole grp., apatite grp., biotite, chromite, diopside, feldspar grp., kalsilite, leucite, magnetite, muscovite, nepheline, olivine, phlogopite, richterite, titanite, tremolite.

Arbarastakh: 7x5km. Magnetite pyroxenite, syenite, carbonatite. Albite, ankerite, apatite grp., baddeleyite, barite, bastnaesite, biotite, burbankite, calcite, cancrinite, chondrodite, diopside, dolomite, feldspar grp., forsterite, galena, huanghoite, kalsilite, magnetite, nepheline, phlogopite, pyrochlore, pyroxene grp., parisite, riebeckite, sphalerite, strontianite, witherite, zircon, zirconolite.

Ingili: 30km². Ijolite, urtite, pyroxenite, nepheline syenite, carbonatites. Aegirine, albite, amphibole grp., biotite,calcite, cancrinite, dolomite, melanite, nepheline, schorlomite.

Konder: Perfect circular intrusion, about 10km in diameter. Center of dunites, next olivinites, next clinopyroxenites, next pyroxenites, then essexites and shonkinites, veins of nepheline syenites and according pegmatites. Aegirine, albite, andesine, apatite grp., arfvedsonite, biotite, chlorite grp., chromite, clinopyroxene, diopside, eudialyte, forsterite, hedenbergite, hornblende, ilmenite, lamprophyllite, magnetite, microcline, murmanite, nepheline, orthoclase, perovskite, ramsayite, quartz, salite, serpentine grp., spinel, titanite, zeolite grp..

Sybakh: 2km². Serpentinite, dunite, clinopyroxenite, shonkinite, peralkaline syenite.

Chad: 2km in diameter. Dunites, clinopyroxenites, alkaline syenites, veins of aplite, peralkaline pegmatites. Apatite grp., biotite, clinopyroxene, diopside, feldspar grp., hornblende, magnetite, olivine, spinel, „platinum grp. minerals“.

Tokko (=Tokinskii): 200km². Basaltic alava flows with plutonic xenoliths. Augite, clinopyroxene, kaersutite, olivine, orthopyroxene, phlogopite, sanidine, spinel.

Tarynsky Massif: Carbonatites, leucogranites. Calcite, wollastonite.

&Suggested reading:

Kogarko,L.N., V.A.Kononova, M.P.Orlova, A.R.Woolley: Alkaline Rocks and Carbonatites of the World. Part 2: Former USSR. Chapman and Hall, London, 1995.

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