earth science

Hisingerite

Hisingerite 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 Hisingerite rather than just read about it. In short: Hisingerite is an iron(III) phyllosilicate mineral with formula FeIII2Si2O5(OH)4 · 2 H2O. A black or dark brown, lustrous secondary mineral, it is formed by the weathering or hydrothermal alteration of other iron silicate and sulfide minerals.

Key takeaways

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

Reference excerpt

Hisingerite is an iron(III) phyllosilicate mineral with formula FeIII2Si2O5(OH)4 · 2 H2O. A black or dark brown, lustrous secondary mineral, it is formed by the weathering or hydrothermal alteration of other iron silicate and sulfide minerals. It was first described in 1751 by A.F. Cronstedt from Väster Silvberg, Dalarna, Sweden (under the name “kolspeglande järnmalm”), and in 1810 by W. Hisinger from the Gillinge iron mine, Södermanland, Sweden (“svart stenart”, later “gillingit”). In 1828 it was found at an occurrence in Riddarhyttan, Vastmanland, Sweden. It was named after Wilhelm Hisinger (1766–1852), a Swedish chemist. There are also aluminian hisingerite variety in which one of the iron atoms is replaced by aluminium and chrome-alumina-hisingerite variety in which chromium substitutes for iron.

References

Illustrations

Worked examples

Example 1 — a first encounter with Hisingerite

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

In research: Hisingerite 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 Hisingerite 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: Hisingerite is common in secondary-school and first-year university syllabi. It links to neighbouring topics Iron(III) minerals, Phyllosilicates, Silicate mineral stubs, so understanding it makes those chapters shorter.
In everyday life: Look for Hisingerite 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.

Ask Teacher Smith questions about this articleOpens your AI tutor with a question about “Hisingerite” →

Affiliate

Preply — study more efficiently by working with a personal tutor. 50% off.

How to study Hisingerite in 20 minutes

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

Frequently asked questions

What is Hisingerite in simple terms?

Why does Hisingerite 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 Hisingerite?

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 Hisingerite.