earth science

Zavaritskite

Zavaritskite 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 Zavaritskite rather than just read about it. In short: Zavaritskite is a rare mineral of the halide class, bismuth oxyhalide with the chemical formula (BiO)F. It is named after the Soviet geologist and petrographer, academician of the USSR Academy of Sciences Alexander Nikolaevich Zavaritsky.

Key takeaways

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

Reference excerpt

Zavaritskite is a rare mineral of the halide class, bismuth oxyhalide with the chemical formula (BiO)F. It is named after the Soviet geologist and petrographer, academician of the USSR Academy of Sciences Alexander Nikolaevich Zavaritsky. It was discovered in 1962 by Soviet scientists. Zavaritskite is part of matlockite group of minerals.

Description Zavaritskite is a gray mineral with a greasy or semi-metallic luster; opaque, only slightly translucent in very small grains. The mineral powder is finely dispersed, colorless. The crystallization process of zavaritskite occurs in a square system, due to which the mineral forms sufficiently fine-grained powder cryptocrystalline aggregates. The mineral is usually found together with bismuth, topaz, fluorite and others in the oxidized zone of the Sherlovogorsky deposit in Transbaikal. Zavaritskite was first described in 1962 by Soviet scientists E. I. Dolomanova, V. M. Senderova, and M. T. Yanchenko. It is one of the oxidation products of bismuthine, it is extremely rare.

Formation and locations Zavaritskite is formed secondarily as a weathering product of bismuthinite in bismuth-containing ore deposits. In addition to solid bismuth and bismuthinite, the mineral can also occur in paragenesis with bismutite and gold, among others. As a rare mineral formation, zavaritskite has only been detected at a few sites, although so far (as of 2018) about 20 sites are known. In addition to Sherlovaya Gora in Russia, zavaritskite was discovered in quartz-topaz-siderophyllite greisen, which cut a granite pluton. Also, the mineral was discovered in Russia at the Nevskoe tungsten-tin deposit near Omsukchan in the Magadan Oblast, at Pitkyaranta in the Republic of Karelia, and at Mount Ploskaya in the Keivy Mountains on the Kola Peninsula. Other known sites to date are Fielders Hill near Torrington (Clive County) and the Elsmore tin mine in Inverell Shire (Gough County) in the Australian state of New South Wales; the Beauvoir quarry near Échassières in the French département of Allier; the Ebisu pits near Nakatsugawa and Ashio near Nikkō on the Japanese island of Honshu; and several others.

References

Illustrations

Worked examples

Example 1 — a first encounter with Zavaritskite

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

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

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

Frequently asked questions

What is Zavaritskite in simple terms?

Why does Zavaritskite 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 Zavaritskite?

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 Zavaritskite.