Browse Items (1651 total)

Hand Sample:

Large (1 cm-2 cm) dark grey to translucent quartz crystals comprise the matrix of the rock. Melilite minerals propagate consistently paralell to one another throughout the rock.

Hand Sample:

The rock is largely comprised of a very fine grained light green matrix with large (1 x 3 cm) black equant galena crystals. It's pretty magnificent.

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most are paper with map section covered in somewhat fragile plastic

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most are paper with map section covered in somewhat fragile plastic

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large map -- approx. 4x4 feet

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large map -- approx. 4x4 feet

Albite, Na-amphiboles (from Mg-riebeckite to glaucophane, epidote, aegirinic pyroxene, chlorite, ilmenite, tspesphene, apatite, lawsonite. Pseudomorphic relations of the metamorphic paragenesis on the substituted primary phases. Sometimes lawsonite…

OCR PDF of supplemental information for the Meta-Pelite Suite, Shelburne, Nova Scotia collection. This file outlines the descriptions of every sample in suite as well as providing geologic context to the area and the suite itself.

Fine grained

Sodic pyroxene, glaucophane, lawsonite, chlorite. Pseudomorphs of sodic pyroxene and glaucophane,chlorite on original augitic pyroxenes; pseudomorphs of lawsonite and glaucophane on original plagioclase.

country rock

The metasomatised pyroclastics are from the farm Thysfontein. They are baked and well indurated. Induration is the hardening of rocks by heat or baking as well as the hardening of sediments by cementation or compaction. The pyroclastics are…

Muscovite-biotite schist

Micaceous schist containing staurolite. Note that the staurolite is only found in the pelitic layers and is absent in the quartz-rich layers

Macroscopic: Biotite, muscovite schist. This sample was a part of a roof pendant, or a piece of rock the surrounded a batholith. Likely part of the silimanite zone. Microscopic: This sample under thin section displays an almost entirely mica and…

Gneiss with a migmatitic fabric. Also contains quartz-feldspar pods.

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