earth science

Humite (mineral group)

Humite (mineral group) 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 Humite (mineral group) rather than just read about it. In short: The humite group is a group of nesosilicates with the general formula An(SiO4)m(F,OH)2. When A is predominantly magnesium we have the humite subgroup: norbergite, Mg3(SiO4)(F,OH)2 chondrodite, (Mg,Fe,Ti)5(SiO4)2(F,OH,O)2 humite, (Mg,Fe)7(SiO4)3(F,OH)2 clinohumite, (Mg,Fe)9(SiO4)4(F,OH)2 The manganese-humite subgroup has members alleghanyite, (Mn2+)5(SiO4)2(OH,F)2 manganhumite, (Mn,Mg)7(SiO4)3(OH)2 sonolite, Mn9(SiO4…

Key takeaways

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

Reference excerpt

The humite group is a group of nesosilicates with the general formula An(SiO4)m(F,OH)2. When A is predominantly magnesium we have the humite subgroup:

norbergite, Mg3(SiO4)(F,OH)2 chondrodite, (Mg,Fe,Ti)5(SiO4)2(F,OH,O)2 humite, (Mg,Fe)7(SiO4)3(F,OH)2 clinohumite, (Mg,Fe)9(SiO4)4(F,OH)2 The manganese-humite subgroup has members

alleghanyite, (Mn2+)5(SiO4)2(OH,F)2 manganhumite, (Mn,Mg)7(SiO4)3(OH)2 sonolite, Mn9(SiO4)4(F,OH)2 and the leucophoenicite subgroup has members

ribbeite, Mn5(SiO4)2(OH)2 leucophoenicite, (Mn,Ca,Mg,Zn)(SiO4)3(OH)2 jerrygibbsite (Mn,Zn)9(SiO4)4(OH)2 Chondrodite is the most common member of the humite group. It may contain Ti up to 9.6% TiO2. Chondrodite from Sterling Hill Mine and Franklin Mine contains zinc to 11.5% ZnO and Mn to 36% MnO, and grades to alleghanyite. The humite minerals commonly alter to serpentine or Mg-rich chlorite and dissolve by weathering, leaving iron oxide residues.

References

Illustrations

Worked examples

Example 1 — a first encounter with Humite (mineral group)

Start with the simplest possible case. Write down what Humite (mineral group) 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 Humite (mineral group) 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 Humite (mineral group) 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 Humite (mineral group)

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

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

Frequently asked questions

What is Humite (mineral group) in simple terms?

The humite group is a group of nesosilicates with the general formula An(SiO4)m(F,OH)2. When A is predominantly magnesium we have the humite subgroup: norbergite, Mg3(SiO4)(F,OH)2 chondrodite, (Mg,Fe,Ti)5(SiO4)2(F,OH,O)2 humite, (Mg,Fe)7(SiO4)3(F,OH)2 clinohumite, (Mg,Fe)9(SiO4)4(F,OH)2 The mangane…

Why does Humite (mineral group) 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 Humite (mineral group)?

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 Humite (mineral group).