earth science

Jurbanite

Jurbanite 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 Jurbanite rather than just read about it. In short: Jurbanite is a sulfate mineral with the chemical formula AlSO4(OH)·5H2O. Its molecular weight is 230.13 g/mol.

Key takeaways

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

Reference excerpt

Jurbanite is a sulfate mineral with the chemical formula AlSO4(OH)·5H2O. Its molecular weight is 230.13 g/mol. It crystallizes in the monoclinic system and is dimorphous with the orthorhombic mineral rostite. Jurbanite occurs as a secondary (post-mine) mineral in mines containing sulfide minerals. Jurbanite was first described for an occurrence in the San Manuel mine of Pinal County, Arizona and first described in 1976s. It was named for Joseph John Urban, the mineral collector who discovered it.

References

Illustrations

Worked examples

Example 1 — a first encounter with Jurbanite

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

In research: Jurbanite 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 Jurbanite 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: Jurbanite is common in secondary-school and first-year university syllabi. It links to neighbouring topics Aluminium minerals, Minerals described in 1976, Minerals in space group 14, so understanding it makes those chapters shorter.
In everyday life: Look for Jurbanite 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 Jurbanite in 20 minutes

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

Frequently asked questions

What is Jurbanite in simple terms?

Jurbanite is a sulfate mineral with the chemical formula AlSO4(OH)·5H2O. Its molecular weight is 230.13 g/mol.

Why does Jurbanite 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 Jurbanite?

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 Jurbanite.