stripes
Occurrence number:
136-01-012
Country:
Russia
Region:
Aldan
Location:
Longitude: 125.77, Latitude: 58.7
Carbonatite:
No
This breccia pipe of about 200 m diameter is located on the northern margin of the Ryabinovyi complex (locality 13). It cuts Archaean basement rocks and alkaline syenites of the Ryabinovyi intrusion. The pipe consists of olivine-diopside-phlogopite basic lamproites (mg 77) with phenocrysts of olivine, pseudomorphed by talc and saponite (10-20%), chrome-diopside (7-15%) and phlogopite (5-12%). The fine-grained groundmass comprises microlites of diopside, phlogopite, K-feldspar and altered glass.
References:
BOGATIKOV, O.A., RYABCHIKOV, I.D., KONONOVA, V.A. et al. 1991. Lamproite. Nauka, Moscow. 320 pp.
Map:
Fig. 2_224. Ryabinovyi (after Kochetkov et al., 1989, Fig. 1). The Lyzhnaya lamproite pipe lies at the northern edge of the map.
Location: