The Rock Cycle
Fossils and dinosaurs
Fluorescent Minerals
Art and Industry
Listen to Joan Waters talking about exhibits at the 2020 Uxbridge Rock Show (YouTube interview by Uxbridge FM)
AND Scroll through the accompanying slideshow -> -> ->
Every year our Rock Show has new displays:
Topic areas Displays
Field locations Jurassic Coast, Cornwall, Ireland
Local geology Medieval churches in Hillingdon, Uxbridge building stones
Current interest HS2, new fossil finds, mining news
Earth Science climate change, fossil records, volcanoes, earthquakes
2021 The Rock Cycle
The Earth's crust is constantly being recycled. When old crust melts it becomes magma which may cool to form new igneous rocks. At the Earth's surface all rocks are subject to erosion, which reduces them to sediments from which new sedimentary rocks will form. When rocks get buried deep enough to be subjected to heat and pressure their chemical composition changes and metamorphic rocks are formed.
Geological Society Rock Cycle Factsheet
2021 Rock Galleries

Igneous Rocks - Extrusive
Metamorphic Rocks
Igneous Rocks - Intrusive
Sedimentary Rocks

2021 Rock Galleries by HHGS member Allan Wheeler.
2021 Fossils and Dinosaurs
The Fossils Quiz is by HHGS member, Jackie Gill.
Click through each page to learn about plants and animals - ancient and modern - then select your answers to the questions and see how much you've learnt!
It works best if you [Open in new Window] by clicking bottom right icon as shown here.
If the quiz above doesn't appear you can download the full version below:
Download the full version here.

INTERACTIVE QUIZ: Facts, questions, answers - sound effects for right/wrong
Fluorescent Minerals
We have a light box at our Library show. What's it all about?
Some minerals absorb ultra-violet (UV) radiation and convert it to longer wavelengths. The minerals glow because UV radiation excites the electrons in their atoms and sends them to a higher energy state.

Fluorescence stops when the UV light is removed. If the effect does not stop immediately it is called phosphorescence. This can last up to a few minutes.

Which minerals fluoresce?
You might think that fluorite will always fluoresce, but in fact it needs to contain specific rare earth elements: europium or yttrium. Too much or too little of these 'activators' will stop the effect, as will the presence of iron.
Scheelite is a mineral that always fluoresces under UV light.
In daylight we are not able to notice fluorescence, so at the Rock Show we use curtains to give the necessary darkness to our display before switching on the UV lights.
Glowing Rocks Display
Our light box can shine UV light at two different wavelengths. Different minerals respond to different wavelengths.
Light Box at the Uxbridge Rock Show
"It looks like Hallowe'en!"

Art and Industry
Everything we have comes from the Earth. If it doesn't grow, it has to be dug up and processed.
Minerals are mined: gold, silver, diamonds, halite (salt), haematite (iron, steel), bauxite (aluminium), anthracite (coal), cassiterite (tin).
Rocks are quarried: marble (statues), limestone (construction), granite (kerb stones), sandstone (pavements).
Minerals and rocks can be very pleasing to the eye and to the touch. HHGS members display their favourite pieces at the Uxbridge Rock Show each year. Examples are shown in the
Art Displays below. For 2021 our new display is about Industry.
2021 Industry Display
Industry Display [open in window] The Industry Display is by HHGS members John Gill, Allan Wheeler, Jackie Gill, Joan Waters.
Rock Show Art Displays
Rock Show Art Displays [open in window]
Supporting Science Week
British Science Week 2021: 5-14 March
HHGS Local Geology
link to BGS Geological Timechart
British Geology Links
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