earth science

Vladimirite

Vladimirite 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 Vladimirite rather than just read about it. In short: Vladimirite is a rare calcium arsenate mineral with a formula of Ca5(HAsO4)2(AsO4)2·5H2O. It is named after the Vladimirovskoye deposit in Russia, where it was discovered in the 1950s.

Key takeaways

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

Reference excerpt

Vladimirite is a rare calcium arsenate mineral with a formula of Ca5(HAsO4)2(AsO4)2·5H2O. It is named after the Vladimirovskoye deposit in Russia, where it was discovered in the 1950s. Vladimirite is monoclinic-prismatic, which means crystallographically, it contains three axes of unequal length and the angles between two of the axes are 90 degrees, and one is less than 90 degrees. It belongs to the space group P21/c. The mineral also has an orthorhombic polytype. In terms of its optical properties, vladimirite is anisotropic which means the velocity of light varies depending on direction through the mineral. Relief is a diagnostic characteristic of a mineral in plane polarized light that refers to the various ways different minerals "stand out". Vladimirite's calculated relief is 1.65-1.661, which is moderate. It is colorless in plane polarized light, and it is weakly pleochroic. Pleochroism is the variety of colors under plane polarized light displayed by crystals at various angles.

Occurrence Vladimirite was first described in 1953 at two deposits in Russia, the Khovu-Aksy nickel-cobalt deposit, Tuva Republic, and the Vladimirovskoye cobalt deposit, Altai Mountains, Altaiskii Krai, Siberia. It is a secondary mineral in the oxidized zone of arsenic-bearing ore deposits. It occurs with picropharmacolite, erythrite and aragonite. It has been reported from the Richelsdorf Mountains, Hesse, Germany; the Bou Azzer district, Morocco and the Mohawk mine, Keweenaw County, Michigan.

References

Illustrations

Worked examples

Example 1 — a first encounter with Vladimirite

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

In research: Vladimirite 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 Vladimirite 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: Vladimirite is common in secondary-school and first-year university syllabi. It links to neighbouring topics Arsenate minerals, Calcium minerals, Mineral stubs, so understanding it makes those chapters shorter.
In everyday life: Look for Vladimirite 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 Vladimirite in 20 minutes

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

Frequently asked questions

What is Vladimirite in simple terms?

Vladimirite is a rare calcium arsenate mineral with a formula of Ca5(HAsO4)2(AsO4)2·5H2O. It is named after the Vladimirovskoye deposit in Russia, where it was discovered in the 1950s.

Why does Vladimirite 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 Vladimirite?

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 Vladimirite.