earth science

Luxullianite

Luxullianite is a earth science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Luxullianite rather than just read about it. In short: Luxullianite (also known as luxulyanite or luxulianite) is a rare type of porphyritic tournalinized granite, notable for the presence of clusters of radially-arranged acicular tourmaline crystals enclosed by phenocrysts of orthoclase and quartz in a matrix of quartz, tourmaline, alkali feldspar, brown mica, and cassiterite. The name originates from the village of Luxulyan in Cornwall, United Kingdom, where this type…

Key takeaways

Luxullianite belongs to earth science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Luxullianite to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Luxullianite from memory before moving on to harder problems.

Reference excerpt

Luxullianite (also known as luxulyanite or luxulianite) is a rare type of porphyritic tournalinized granite, notable for the presence of clusters of radially-arranged acicular tourmaline crystals enclosed by phenocrysts of orthoclase and quartz in a matrix of quartz, tourmaline, alkali feldspar, brown mica, and cassiterite. The name originates from the village of Luxulyan in Cornwall, United Kingdom, where this type of granite is found. An example may be seen in the Duke of Wellington's tomb in St Paul's Cathedral in London. Some luxullianite is also used in the Porphyry Hall of the Place House in Fowey.

References

External links

Microscopic images of luxullianite. Siddall, R. (2014), Minerals Menu: a catalogue of minerals & textures in thin section.

Illustrations

Worked examples

Example 1 — a first encounter with Luxullianite

Start with the simplest possible case. Write down what Luxullianite claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In earth science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Luxullianite before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Luxullianite ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Luxullianite

In research: Luxullianite appears in earth science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Luxullianite in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Luxullianite is common in secondary-school and first-year university syllabi. It links to neighbouring topics Geology of Cornwall, Granitic rocks, Petrology stubs, so understanding it makes those chapters shorter.
In everyday life: Look for Luxullianite outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Luxullianite in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Luxullianite means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Luxullianite out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Luxullianite in simple terms?

Why does Luxullianite matter?

Because it connects several earth science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Luxullianite?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Luxullianite.