Crystallography Open Database
- COD Home
- Accessing COD Data
- Add Your Data
- Documentation
Information card for entry 1000012
Preview
| Coordinates | 1000012.cif |
|---|---|
| Original paper (by DOI) | HTML |
| External links | AMCSD |
| Mineral name | Diopside |
|---|---|
| Formula | Ca Mg O6 Si2 |
| Calculated formula | Ca4 Mg4 O24 Si8 |
| Title of publication | The crystal structure of diopside at pressure to 10 GPa Sample: P = 7.08 GPa |
| Authors of publication | Thompson, R. M.; Downs, R. T. |
| Journal of publication | American Mineralogist |
| Year of publication | 2008 |
| Journal volume | 93 |
| Pages of publication | 177 - 186 |
| a | 9.5731 Å |
| b | 8.7197 Å |
| c | 5.158 Å |
| α | 90° |
| β | 105.203° |
| γ | 90° |
| Cell volume | 415.493 Å3 |
| Ambient diffracton pressure | 7080000 kPa |
| Number of distinct elements | 4 |
| Space group number | 15 |
| Hermann-Mauguin space group symbol | C 1 2/c 1 |
| Hall space group symbol | -C 2yc |
| Has coordinates | Yes |
| Has disorder | No |
| Has Fobs | No |
| Revision | Date | Message | Files |
|---|---|---|---|
| 282068 (current) | 2023-03-26 | cod/ (saulius@tasmanijos-velnias) Adding the '_cod_related_entry_...' loop to those COD AMCSD entries that lacked it, and adding the related AMCSD database ID to this loop. |
1000012.cif |
| 282053 | 2023-03-24 | cod/ (saulius@tasmanijos-velnias) Updating the existing COD records from the recent AMCSD downloads: - Adding AMCSD IDs to those COD records that exacly matched the AMCSD structures (comparing unit cells, space groups, coordinates and measurement conditions) but did not yet have the AMCSD ID; - Adding new mineral names, compound sources, measurement conditions (when those were missing) and other informations from the AMCSD CIFs. |
1000012.cif |
| 278219 | 2022-09-27 | cif/1/00/00/ Added an explicit space group operation list based on the provided space group symbols and updated space group information using the 'cif_filter' program in entries 1000007-1000013. |
1000012.cif |
| 176729 | 2016-02-18 | cif/ (antanas@echidna.ibt.lt) Replacing _[local]_cod_* tags with their equivalents from the COD CIF dictionary in multiple entries in range 1. |
1000012.cif |
| 130149 | 2015-01-27 | cod/ (saulius@kolibris) Deriving Hall space group symbols for 12003 CIFs using the 'cif_filter --estimate-spacegroup' command. |
1000012.cif |
| 120071 | 2014-07-11 | Adding DOIs to range 1 structures. | 1000012.cif |
| 85284 | 2013-05-05 | cif/ (saulius@koala.ibt.lt) Removing the _amcsd_database_code from the series 1 CIFs, since the the assigments of AMCSD in COD are outdated. |
1000012.cif |
| 77586 | 2013-03-28 | cod/cif/ (saulius@koala.ibt.lt) Merging mineral data updates (_chemical_name_mineral, _chemical_name_common, structural formulae) sent to me by T.D. in his e-mail. The merge was done by the command: for i in split/*.cif do ( B=$(basename $i); C=$(echo $B|awk '{print "/home/saulius/struct/cod/cif/"substr($0,1,1)"/"substr($0,2,2)"/"substr($0,4,2)"/"$0}'); ( set -x; cif_merge --over \ _chemical_name_mineral,_chemical_name_structure_type,_chemical_name_common,_chemical_name_systematic,_chemical_formula_structural,_chemical_formula_sum \ $C $i ) \ | cif_filter --add-cif-header $C \ | sponge $C ) done in the working copy of the following repository: URL: svn+ssh://pitonas.ibt.lt/home/xray/svn-repositories/xyz-extraction/contributions Repository Root: svn+ssh://pitonas.ibt.lt/home/xray/svn-repositories/xyz-extraction Repository UUID: 9acf3947-1f02-0410-ae2a-984b57ad209b Revision: 2625 Node Kind: directory Schedule: normal Last Changed Author: saulius Last Changed Rev: 2625 Last Changed Date: 2013-03-28 15:13:00 +0200 (Thu, 28 Mar 2013) |
1000012.cif |
| 35911 | 2012-02-28 | cif/ Reorganising ranges 1, 3, 5, 6 and 8 into a prefix-directory tree. |
1000012.cif |
| 1213 | 2010-06-10 | cif/ Adding _exptl_crystal_density_diffrn tag with value from AMCSD for those COD series 1-8 entries that did not have the tag before. |
1000012.cif |
| 1212 | 2010-06-10 | cif/ Inserting AMCSD numbers for the automatically recognised series 1, 2, 4, 5 and 8 CIFs. |
1000012.cif |
| 1082 | 2010-04-11 | cif/1/ Updating bibliography in the series 1 CIFs from the AMCSD-resynchronisation-2009.06.24/ directory: for i in outputs/redeposit/1*.cif ; \ do ( \ B=$(basename $i); \ C=~/struct/cod/cif/1/$B; \ echo === Updating $C ===; \ cif_filter --bibliography $i --add-cif-header $C $C > tmp; \ /bin/mv tmp $C \ ) done |
1000012.cif |
| 966 | 2010-01-30 | cif/ Adding _cod_database_code tags to all COD entries. Adding tag description to the cif_cod.dic dictionary so that COD entries can be validated. |
1000012.cif |
| 900 | 2009-11-21 | cif/ Renaming data blocks of all COD CIFs so that they have COD number (taken from the COD file name) as their datablock number: find ? -name \*.cif \ | xargs \ perl \ -MFile::Basename \ -i \ -lpe 's/^data_([^\s]*)/"data_".basename($ARGV, ".cif")/e' After this change, 'cif2cod' will give correct keys in the generated table. Also, data block names are guaranteed to be distinct, so any subset of COD CIFs can be concatenated into one file without introducing ambiguity. |
1000012.cif |
| 893 | 2009-11-20 | cif/ Generating _diffrn_ambient_temperature and _diffrn_ambient_pressure tags from the CIF file comments like "T = 100K" (using the 975 revision of cif_create_AMCSD_pressure_temp_tags). Mostly, series 9 CIFs (obtained AMCSD) have such comments. Only files that did not had these tags originally were changed. The tags were generated using the following command: ( \ set -x; \ find $(/bin/ls -rd ?) -name \*.cif \ | xargs -n1 -iX \ bash -c 'awk "/^#/,/^data_/{print}/^data_/{exit}" X \ | grep -v "^data_" > tmp-$$; \ cif_create_AMCSD_pressure_temp_tags X >> tmp-$$; \ if (grep -q _diffrn_ambient_temperature tmp-$$ >& /dev/null && \ ! grep -q _diffrn_ambient_temperature X >& /dev/null) || \ (grep -q _diffrn_ambient_pressure tmp-$$ >& /dev/null && \ ! grep -q _diffrn_ambient_pressure X >& /dev/null); \ then \ mv -v tmp-$$ X; \ fi; \ rm -f tmp-$$' \ ) >& make-temp-pressure-tags.log After this, the modified files were checked using 'vcif': svn st | grep ^M | awk '{print $NF}' | xargs -n1 vcif -l 2048 It was checked that for the other tags, only tag order and value formatting has changed in the modifed files, if at all: ( \ set -x; \ svn st ? \ | awk '/^M/{print $NF}' \ | sort \ | xargs -n1 -iX \ bash -c 'echo -e "\n"=== X ===; \ diff -b \ <(svn cat X | sort) \ <(sort X)' \ ) 2>&1 | tee diff-sorted.log tdbgrep === diff-sorted.log \ | grep -v ^=== \ | grep -v '^> _diffrn_' \ | grep . \ | grep -vE '^[0-9]+a[0-9]+' \ | less and the changed files were validated against the cif_core.dic (thus checking, among others checks, that the values of the inserted tags have correct types): ( \ set -x; \ svn st ? \ | awk '/^M/{print $NF}' \ | sort \ | xargs -n1 -iX \ bash -c 'echo === X ===; \ cif_validate \ --dic ~/struct/CIF-dictionaries/cif_core.dic \ X \ --check-all \ --do-not-check-tag-exists-local' \ ) >& validate-pressure-temperature.log |
1000012.cif |
| 853 | 2009-11-16 | cif/ Reconstructing spacegroup designators from the symmetry operators were possible. The comands used can be found in the log file reformat-spacegroups-2009.11.14.log committed with the current revision. Only lines that contained spacegroup designators were changed, and all files pass vcif test after the conversion. |
1000012.cif |
| 618 | 2009-04-13 | Changing tag _chemical_name into _chemical_name_mineral in 11 series 1* CIFs. |
1000012.cif |
| 617 | 2009-04-13 | Changing tag _atom_site_Uiso_or_equiv into _atom_site_U_iso_or_equiv, to match standard CIF dictionaries in all COD files. 11 files (10 in series 1 *and one in series 7*) are affected by the change. |
1000012.cif |
| 20 | 2008-01-26 | Removing white space at the end of all lines from all COD CIF files: in the cod/cif/ directory: ff \*.cif | xargs perl -i -pe 's/\s+\n$/\n/' |
1000012.cif |
| 19 | 2008-01-26 | Changing all end-of-line codes from DOS style to UNIX style in all COD CIF files, for more convenient processing: In the cod/cif/ directory: ff \*.cif | xargs perl -i -pe 's/\r\n/\n/' |
1000012.cif |
| 14 | 2008-01-14 | Appending a header with SVN keywords, COD URL and copying policy to all COD CIF files. |
1000012.cif |
| 13 | 2008-01-13 | Setting the svn:keywords property to "Author Date Revision URL Id" for all CIF files in the cod/cif directory. |
1000012.cif |
| 1 | 2007-11-30 | Adding all .cif files from the COD, downloaded in a Cod.zip file on 2007.02.07 (and the same Cod.zip is downloadable today, on 2007.11.29) |
1000012.cif |
All data in the COD and the database itself are dedicated to the
public domain and licensed under the
CC0
License
.
Users of the data should acknowledge the original authors of the
structural data.