science

Orthopyroxenite

Orthopyroxenite is a 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 Orthopyroxenite rather than just read about it. In short: Orthopyroxenite is an ultramafic rock that is almost exclusively made from the mineral orthopyroxene, the orthorhombic version of pyroxene and a type of pyroxenite. It can have up to a few percent of olivine and clinopyroxene.

Key takeaways

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

Reference excerpt

Orthopyroxenite is an ultramafic rock that is almost exclusively made from the mineral orthopyroxene, the orthorhombic version of pyroxene and a type of pyroxenite. It can have up to a few percent of olivine and clinopyroxene. If it contains between 5 and 40% olivine, it is an olivine orthopyroxenite. If it contains over 40% olivine and orthopyroxene, it is a harzburgite.

Orthopyroxenites can also occur on other planets. ALH 84001 is a Martian meteorite that can be classified as an orthopyroxenite. It is the only meteorite found with that composition and the only member of the Martian orthopyroxenite group of meteorites.

References

Illustrations

Worked examples

Example 1 — a first encounter with Orthopyroxenite

Start with the simplest possible case. Write down what Orthopyroxenite claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In 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 Orthopyroxenite 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 Orthopyroxenite 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 Orthopyroxenite

In research: Orthopyroxenite appears in 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 Orthopyroxenite 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: Orthopyroxenite is common in secondary-school and first-year university syllabi. It links to neighbouring topics Meteorites, Petrology stubs, Plutonic rocks, so understanding it makes those chapters shorter.
In everyday life: Look for Orthopyroxenite 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 Orthopyroxenite in 20 minutes

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

Frequently asked questions

What is Orthopyroxenite in simple terms?

Why does Orthopyroxenite matter?

Because it connects several 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 Orthopyroxenite?

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 Orthopyroxenite.