Scapolite In Thin Section

Well formed gem quality prismatic crystals with a square cross section are sometimes found in marbles.

Scapolite in thin section. A 12 05 c 7 58 z 2. This is a thin section of rock from ravneberget quarry sondeled norway. Scapolite is a mineral series consisting of two very similar minerals.

Scapolite is found in regionally metamorphosed rocks such as marble gneiss and schist as massive speciems. Scapolite is found in regionally metamorphosed rocks such as marble gneiss and schist as massive speciems. The two scapolite minerals are often visibly indistinguishable from each other and they also form unclassified intermediary examples within their series.

Thin section microscope slide teschenite new south wales australia. Thin section microscope slide teschenite new south wales australia. Sodium rich marialite and calcium rich meionite.

This group or solid solution series includes marialite and meionite and varies between the sodium chloride rich marialite and the calcium carbonate rich meionite. It is an extremely complex slide and will test your identification skills. The pyroxene has been partially altered to hornblende the feldspar partially to scapolite marialite end of the solid solution.

Scapolite forms some features will require a polarising microscope to view. It is a gabbro that has been metasomatised by chlorine and phosphorous. Large skeletal ilmenite is rimmed with biotite mica and apatite is also present.

Silvialite is a mineral that is very similar to meionite. A c 1 0 62904. These massive specimens often exhibit a wood grain or fibrous texture which facilitates their identification.