User:JaneYin/Calcite/Ol Evene Peer Review

General info

 * Whose work are you reviewing?

JaneYin


 * Link to draft you're reviewing
 * Editing User:JaneYin/Calcite - Wikipedia


 * Link to the current version of the article (if it exists)
 * Calcite - Wikipedia

Evaluate the drafted changes
The "Extended content" added to the article provides a diverse overview of important topics related to calcite. This is done in a well-written manner, that is free of grammatical errors, displays a neutral tone, and provides relevant references to peer-reviewed articles.

Clarity:The added information is written and expressed quite clearly. Minor adjustments could be made however to improve readability and comprehension. For example, under "Properties: Thermoluminescence", reference is made to "the experiment" however it may be unclear to some readers which experiment is being referred to without clicking on the proceeding citation (citation 1: Medlin, 1959). As a suggestion, the author may opt to change "the experiment" to perhaps "an experiment", or perhaps explicitly state which experiment is being referred to. Doing so may make comprehension easier for some readers. Overall, adding thermoluminescence to the list of properties already provided (crystal habits, optical, and chemical) is a strong addition that provides another important property of calcite. Without this addition, the article would be lacking in key properties of calcite.

Under "Use and application", and link to Wikipedia's "Carbonation" page (Carbonation - Wikipedia) may help some readers understand carbonation if they are unfamiliar. The current, unedited Calcite Wikipedia page has no link to the Carbonation page.

The section on "Climate Change" is another section that was missing from the current, unedited Calcite Wikipedia page. This addition is important and will make a great contribution when published. The explanation of how climate change is exacerbating ocean acidification is well-written, clear, and easy to follow.

Structure:

The content is well-written, free of grammatical and spelling errors, and well-organized by dividing content into major points. The "Thermoluminescence" section under "Properties" describes another important and characteristic mineral property of calcite that was not included in the current Calcite Wikipedia article. As mentioned above, the article would be lacking without this important mineral property.

Additionally, each added section is structured in a way that is easy to read which promotes understanding of the topic. This is done by dividing major ideas into headers and expanding on those ideas through sub-headers, and well-written paragraphs. The section on "Distribution" is a great example of structural organization. This section breaks down the distribution of calcite globally by adding bolded sub-headers of the leading global countries. If possible, it may be convenient (but not necessary) to include a world map of global calcite distribution, though this may be difficult to find/create and time-consuming. (More on the "Distribution" section below)

Balanced Coverage and Neutrality:

The content is neutral and simply displays factual information relating to the topic. There is no evidence of biased information. Information is not overrepresented. However, under the "Distribution" section, it appears that information could be added to some of the listed countries. For example, perhaps adding how much calcite is mined from each of the listed mines, and what type of mines they are (ex: open-pit), underground, etc). This could help provide a relative distribution of calcite globally based on the mining operations given, if possible.

Additionally, double-check to ensure the Helgustadanama mine in Iceland is still operational. It may currently be a nature reserve since 1975 (Daniel Russell - Helgustadir Iceland Spar Mine (mindat.org)). Regardless, the author may choose to write, for example, "Calcite mining occurred at the Helgustadanama mine" (unless the mine is still operational today). Further, a link to Wikipedia pages on the selected mines (if possible) could help readers familiarize themselves and gain additional information. Here is a link for Helgustadir mine - Wikipedia (Helgustadanama mine).

Talk Page:

The latest activity on the Talk Page is from December 8th, 2014. There were important discussions on the Talk Page which have led to the article being improved in the past. For example, one comment stating how there is only one formation of calcite which has been discussed on the Wikipedia page appears to have been corrected. The current page states several pathways for calcite formation (terrace ledge kink model, ACC, and microorganism activity). There was also a comment mentioning how it would be beneficial to mention chalk, and it appears that someone has added this under the "Etymology" section.

An important section that could be discussed in the Talk Page could relate the optical properties of calcite, specifically, how to identify calcite using petrographic microscopes. This could make mention of calcite twinning, which is a distinctive form of twinning seen in calcite under both plane-polarized light and cross-polarized light.

Sources:

Ten reliable and mainly peer-reviewed sources have been added. These sources are reliable and the citations/references are functional. The added content does a good job of accurately depicting what the sources say, and is done so in a concise and well-written manner. The author may choose to ensure that some of the information is up to date (for example, checking to see if the Helgustadanama mine in Iceland is still operational). Overall, the added references provide key information that has augmented the value of the article.

Suggestions for Improvement:

The strengths and weaknesses of the article have been discussed above.

Overall, the main strengths of the article include the addition of important and relevant information that was missing from the current article. This provides a diverse overview of the key topics related to calcite. The author does a good job of being concise, and is well-written with no grammatical errors or spelling errors. Headers, subheaders, and paragraphs organize the article into a well-structured presentation of factual information. The tone is neutral and simply presents facts, including reliable sources.

Minor weaknesses are present, but are easily fixable, and do not take away from the key information of the article. Comprehension can be improved for the "Properties: Thermoluminescence" section by simply referring to which experiment is being referred to, or by making a note for readers to refer to the citation. Additionally, links to existing Wikipedia articles could be added to help readers seek out additional information (see above). Information in the form of visuals (maps or images) could also be added. Finally, ensure all references/information is up to date (ex: the Helgustadanama mine).

Overall:

Overall the additions are important and add value to the Calcite article. New information is presented that will benefit readers. Information is presented in a way that is easy to follow, and citations make information easy to find. This edit contains important information and will augment the value of the article once published. Well done.

~Ol Evene