earth science

Mcgillite

Mcgillite 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 Mcgillite rather than just read about it. In short: Mcgillite is a rare, monoclinic, pseudohexagonal mineral of the Pyrosmalite group, with the formula Mn2+8Si6O15(OH)8Cl2. It was first approved in 1979, and is named for McGill University.

Key takeaways

Mcgillite 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 Mcgillite to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Mcgillite from memory before moving on to harder problems.

Reference excerpt

Mcgillite is a rare, monoclinic, pseudohexagonal mineral of the Pyrosmalite group, with the formula Mn2+8Si6O15(OH)8Cl2. It was first approved in 1979, and is named for McGill University. Mcgillite is found in the Sullivan Mine, Kimberley, Kootenay district, British Columbia, Canada; the Kyurazawa mine, Tochigi Prefecture, Japan; and at one location in Romania. At the Sullivan mine, it forms as fracture fillings in a manganese-rich portion of quartzite and argillite within a metamorphosed lead-zinc deposit. It is pink in color.

References Handbook of Mineralogy DakotaMatrix entry Mindat.org entry

Illustrations

Worked examples

Example 1 — a first encounter with Mcgillite

Start with the simplest possible case. Write down what Mcgillite 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 Mcgillite 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 Mcgillite 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 Mcgillite

In research: Mcgillite 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 Mcgillite 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: Mcgillite is common in secondary-school and first-year university syllabi. It links to neighbouring topics Monoclinic minerals, so understanding it makes those chapters shorter.
In everyday life: Look for Mcgillite 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 Mcgillite in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Mcgillite 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 Mcgillite out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Mcgillite in simple terms?

Mcgillite is a rare, monoclinic, pseudohexagonal mineral of the Pyrosmalite group, with the formula Mn2+8Si6O15(OH)8Cl2. It was first approved in 1979, and is named for McGill University.

Why does Mcgillite 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 Mcgillite?

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 Mcgillite.