chemistry

Xie Xuejin

Xie Xuejin is a chemistry 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 Xie Xuejin rather than just read about it. In short: Xie Xuejin (simplified Chinese: 谢学锦; traditional Chinese: 謝學錦; 21 May 1923 – 24 February 2017) was a Chinese geochemist who won the AAG Gold Medal in 2007. Xie was considered as the Father of Geochemical Mapping in China.

Key takeaways

Xie Xuejin belongs to chemistry; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Xie Xuejin to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Xie Xuejin from memory before moving on to harder problems.

Reference excerpt

Xie Xuejin (simplified Chinese: 谢学锦; traditional Chinese: 謝學錦; 21 May 1923 – 24 February 2017) was a Chinese geochemist who won the AAG Gold Medal in 2007. Xie was considered as the Father of Geochemical Mapping in China.

Biography Xie was born 21 May 1923 in Beijing, with his ancestral home in Shanghai. He was the son of the geologist Xie Jiarong. From 1941 to 1945, Xie studied physics and chemistry at the College of Sciences of Zhejiang University. Xie also studied chemistry at Chongqing University. After graduation, Xie mainly worked for the Institute of Geophysical and Geochemical Exploration of the Chinese Academy of Sciences (CAS). He was elected as an academician of CAS in 1980. Xie also taught as a professor at Changchun Geological College (later merged into Jilin University), Jilin Province, China.

Research activities During the 1970s and 1980s, Xie proposed and led the National geochemical mapping project and the China-Regional Geochemistry-National Reconnaissance (RGNR) Project. He also technically sponsored these programs, and initially emphasized and demonstrated by mapping the gold mines in China's territory (see also Gold mining in China). This RGNR project lasted for at least 24 years and scanned more than six million km2 of China's mainland surface. The useful information offered from this mega program also contributed to about 80% new mineral discoveries within recent two decades in China. In the 1990s, Xie also contributed to the international standardization for methodology of world geochemical mapping. Xie also further developed some new approaches of searching for buried giant ore deposits. Xie also proposed several deep-penetrating geochemical techniques and methods.

Academic assignments Xie has served many academic positions including:

Leader, the Geochemical Exploration Research Division of the Institute of Geophysical and Geochemical Exploration, CAS. Deputy director, the Institute of Geophysical and Geochemical Exploration, CAS. Honorary director, the Institute of Geophysical and Geochemical Exploration, CAS. Member of the executive committee of the IGCP Board, UNESCO. Associate editor and the member of the editorial board of the Journal of Geochemical Exploration Member of the editorial board of the Geochemistry: Exploration, Environment, Analysis Member of the central executive committee and the chairman of the Analytical Technology Committee of the Global Geochemical Mapping Working Group, IUGS.

Honors and awards Xie received many honors and awards both from China and international organizations, especially the prestigious AAG Gold Medal from the Association of Applied Geochemists in June, 2007 at the 23rd International Geochemical Exploration Symposium banquet in Oviedo, Spain, for "his outstanding scientific achievements in exploration geochemistry".

Monograph Geochemistry: Proceedings of the 30th International Geological Congress, by Xie Xuejing (Editor); Page: 288; Publisher: Brill Academic Publishers (1 October 1997); Language: English; ISBN 90-6764-267-3, ISBN 978-90-6764-267-5.

References

External links The Ho Leung Ho Lee Foundation: Biography of XIE Xuejin (in English) Association of Applied Geochemists: Professor Xie Xuejing, the AAG Gold Medal awardee (in English) (Including photos) News from China - International Seminar on Regional Exploration Geochemistry (in English) AAG Gold Medal 2007 (in English) (Including photo)

Worked examples

Example 1 — a first encounter with Xie Xuejin

Start with the simplest possible case. Write down what Xie Xuejin claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In chemistry, 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 Xie Xuejin 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 Xie Xuejin 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 Xie Xuejin

In research: Xie Xuejin appears in chemistry 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 Xie Xuejin 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: Xie Xuejin is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1923 births, 2017 deaths, 20th-century Chinese chemists, so understanding it makes those chapters shorter.
In everyday life: Look for Xie Xuejin 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 “Xie Xuejin” →

Affiliate

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

How to study Xie Xuejin in 20 minutes

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

Frequently asked questions

What is Xie Xuejin in simple terms?

Why does Xie Xuejin matter?

Because it connects several chemistry 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 Xie Xuejin?

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 Xie Xuejin.