Clinozoisite skarn - Banchory
Collection:
Click the microscope button to view a thin section for this sample.
Microscope
Click the microscope button to view a thin section for this sample.
Microscope

Fact sheet

Clinozoisite skarn - Banchory

This contact metamorphic rock comes from the Bridge of Feugh, near Banchory, Grampian, Scotland. The rock was originally a Proterozoic-age sediment that became metamorphosed during the Grampian orogeny. It was then subjected to heat and fluids during the intrusion of local Caledonian plutons to produce a skarn.

The thin section contains finely intergrown diopside (pyroxene), actinolite (amphibole) and quartz. There are several accessary minerals (notably titanite) exhibiting characteristic lozenge shapes and very high relief in plane polarised light. Clinozoisite is also present, characterised by medium relief and a single strong cleavage in plane polarised light, but striking patchy blue and yellow colours when viewed between crossed polars.

Additional images
  • clinozoisite skarn - width 2.4 cm
Map
57.0451, -2.493
Description:
Bridge of Feugh, near Banchory, Grampian, Scotland
Precision:
Poor
About this collection

The United Kingdom Virtual Microscope (UKVM) collection consists of igneous, sedimentary and metamorphic rocks from around the UK.

It is intended as a teaching resource, helping to tell the story of the common rock types and how they form, and reflecting the history of the UK at the margins of the continent of Europe. The collection is a series of teaching sets, for example igneous rocks from the North Atlantic Igneous Province and SW England; high-temperature metamorphic rocks from Scotland and low-temperature metamorphic rocks from Wales; and sedimentary rocks, including English limestones and sandstones.

Sample details

Type
metamorphic
Category
skarn
Rock-forming mineral
diopside
pyroxene
actinolite
amphibole
quartz
clinozoisite
Accessory minerals
titanite
iron oxide
Category guide  
Category Guide
Title
Refers to any word or phrase that appears in the individual rock names. Names are generally descriptive; they allow users to search for broad terms like ‘granite’ as well as more specific names such as ‘breccia’. However, the adjacent descriptions of the specimens captures a wider range of general words and phrases and is a more powerful search tool.
Description
Refers to any word or phrase that appears anywhere in the descriptions of the specimens
Accessory minerals
Minerals that occur in very low abundance in a rock. They are usually not visible with the naked eye and contribute perhapssver, they often dominate the rare elements such as platinum group metals.
Rock-forming minerals
Minerals that make up the bulk of all rock samples and are also the ones used in rock classi?cation.
Timescale
Selecting one or more period, for example 'Jurassic'.
Theme
A term used to group together related samples that are not already gathered into a single Collection. For instance, there is a ‘SW England granites’ theme that includes such rock types as granite, hydrothermal breccia, skarn and vein samples.
Category
A general term used to label a rock sample. It is a useful way of grouping similar samples throughout a collection. Category names are often, but not exclusively, common rock names (e.g. granite, basalt, dolerite, gabbro, greisen, skarn, gneiss, amphibolite, limestone, sandstone).
Owner
The owner of the sample that appears in the collection. For example, NASA owns all the samples that appear in the Moon Rocks collection
We would like to thank the following for the use of this sample: