earth science

Smaltite

Smaltite 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 Smaltite rather than just read about it. In short: Smaltite is a variety of the mineral skutterudite consisting of cobalt, iron, nickel, and arsenide. It has the chemical formula (Co,Fe,Ni)As2.

Key takeaways

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

Reference excerpt

Smaltite is a variety of the mineral skutterudite consisting of cobalt, iron, nickel, and arsenide. It has the chemical formula (Co,Fe,Ni)As2. Smaltite crystallizes in the cubic system with the same hemihedral symmetry as pyrite; crystals have usually the form of cubes or cubo-octahedra, but are imperfectly developed and of somewhat rare occurrence. More often the mineral is found as compact or granular masses. The color is tin-white to steel-grey, with a metallic luster; the streak is greyish black. Hardness is 5.5 and the specific gravity is 6.5. The cobalt is partly replaced by iron and nickel, and as the latter increases in amount there is a passage to the isomorphous species chloanthite (NiAs2). Smaltite occurs in veins with ores of cobalt, nickel, copper and silver. The best known localities are Cobalt, Ontario and Schneeberg in Saxony, Germany. The name smaltite was given by F. S. Beudant in 1832 because the mineral was used in the preparation of smalt for producing a blue color in porcelain and glass.

Notes

References This article incorporates text from a publication now in the public domain: Spencer, Leonard James (1911). "Smaltite". In Chisholm, Hugh (ed.). Encyclopædia Britannica. Vol. 25 (11th ed.). Cambridge University Press. p. 249.

Illustrations

Worked examples

Example 1 — a first encounter with Smaltite

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

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

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

Frequently asked questions

What is Smaltite in simple terms?

Smaltite is a variety of the mineral skutterudite consisting of cobalt, iron, nickel, and arsenide. It has the chemical formula (Co,Fe,Ni)As2.

Why does Smaltite 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 Smaltite?

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 Smaltite.