Guide to Tables
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First and most important, we must have your tables in an electronic (editable) format! Ideally that format is Microsoft Word or Excel, but we'll even take txt or ascii to keep re-keying to a minimum.
Note: If you use Word's "Table" feature or a spreadsheet with individual cells, do NOT enter an entire list of data into one cell. That will necessitate re-keying or re-supply when we go to layout.
Data should read from left to right, with one value per cell. The table submitted for review should be double spaced if it is short, but not if it is very long. A current issue of the journal will provide examples of approaches to complex tables.
Notes on formatting:
Footnote symbols are used to explain or expand upon data in the table. Am Min style is to use superscript lowercase letters in alphabetical order, as follows (superscript) a,b,c,... They may be doubled and tripled as necessary, but that should be rare since you have 26 letters to start from!
Estimated Standard Deviation
Precision of measurement may be indicated as 1.781 ± 0.002, if 0.002 represents a subjective estimate of the measurement error. Where sufficient data permit calculation of the estimated standard deviation (e.s.d.), indicate it with parentheses e.g., 1.781(2) and 1.781(11) indicate an e.s.d. of 0.002 and 0.011, respectively. Only significant digits shall be given for the observed value, i.e., e.s.d. values in parentheses should be given as single or double digit integers. American Mineralogist as a policy requests that all measured values have to be accompanied by some indication on the uncertainty. Ideally this should be a properly calculated standard uncertainty. Only in exceptional cases, if scarcity of sample or some other special circumstances prohibit any even subjective estimation of an uncertainty, can this rule be waived.