Classification of Jimthompsonite |
| IMA status: | Approved |
|---|
| Strunz 8th edition ID: | 8/F.13-30
|
|---|
| Nickel-Strunz 10th (pending) edition ID: | 9.DF.05
9 : SILICATES (Germanates) D : Inosilicates F : Inosilicates with 2-periodic multiple chains |
|---|
| Dana 8th edition ID: | 67.1.1.1
67 : INOSILICATES Unbranched Chains with W > 2 1 : Unbranched Chains with W>2 with W=3 |
|---|
| Hey's CIM Ref.: | 14.21.11
14 : Silicates not Containing Aluminum 21 : Silicates of Fe and Mg |
|---|
| mindat.org URL: | http://www.mindat.org/min-2096.html Please feel free to link to this page. |
|---|
Type Occurrence of Jimthompsonite |
| Type Locality: | Carlton Mine, Carlton farm, Chester, Windsor Co., Vermont, USA |
|---|
| Year of Discovery: | 1977 |
|---|
Physical Properties of Jimthompsonite |
| Hardness (Mohs): | 2 - 2½ |
|---|
Crystallography of Jimthompsonite |
| Crystal System: | Orthorhombic |
|---|
| Cell Parameters: | a = 18.62Å, b = 27.23Å, c = 5.29Å
|
|---|
| Ratio: | a:b:c = 0.684 : 1 : 0.194 |
|---|
| Unit Cell Volume: | V 2,682.15 ų (Calculated from Unit Cell) |
|---|
Optical Data of Jimthompsonite |
| Type: | Biaxial (-) |
|---|
| RI values: | nα = 1.605 nβ = 1.626 nγ = 1.633 |
|---|
| 2V: | Measured: 62° , Calculated: 58° |
|---|
| Maximum Birefringence: | δ = 0.028
 Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration. |
|---|
| Surface Relief: | Moderate |
|---|
| Dispersion: | strong |
|---|
Chemical Properties of Jimthompsonite |
| Formula: | |
|---|
| Essential elements: | H, Mg, O, Si |
|---|
| All elements listed in formula: | Fe, H, Mg, O, Si |
|---|
| Common Impurities: | Al,Mn,Ca,Na,H2O |
|---|
Relationship of Jimthompsonite to other Species |
| Related Minerals - Nickel-Strunz Grouping): | |
|---|
| Related Minerals - Hey's Index Grouping: | |
|---|
Other Names for Jimthompsonite |
| Synonyms: | |
|---|
| German names: | |
|---|
| Russian names: | |
|---|
| Spanish names: | |
|---|
Other Information |
| Health Warning: | No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care. |
|---|
References for Jimthompsonite |
| Reference List: | American Mineralogist (1978): 63: 1000-1009, 1053-1073.
|
|---|
Internet Links for Jimthompsonite |
| Search Engines: |
Look for Jimthompsonite on Google
Look for Jimthompsonite images on Google |
|---|
| External Links: | Look for Jimthompsonite on WebmineralLook for Jimthompsonite on Athena MineralogyLook for Jimthompsonite on WikipediaLook for Jimthompsonite on Mineralien AtlasRaman and XRD data at RRUFF projectAmerican Mineralogist Crystal Structure DatabaseSearch for Jimthompsonite in the Natural History Museum (London) online catalogueJimthompsonite details from Handbook of Mineralogy (PDF) |
|---|
| Mineral Dealers: | Mineral Classics - Worldwide Collector Quality Minerals and GemsRare and Unusual minerals at Mineralogical Research CompanyLapis Mineral MagazinWendel Minerals - Auktion & ShopBuy Fine Minerals from mineralsweb.comThe Arkenstone - Fine MineralsBuy Minerals and Crystals from Crystalarium.comWright's Rock Shop - excellent mineral specimens since 1970Find Jimthompsonite on www.crystalclassics.co.ukFine Minerals from Dan Weinrich MineralsHigh-end worldwide specimens & outstanding customer serviceWilensky Fine Minerals |
|---|
| Jobs: | Mining & Geology Jobs |
|---|
Page Sponsor |
| Sponsorship: | This page is currently not sponsored. Click here to find out how you can sponsor this page. |
|---|
Localities for Jimthompsonite |
The map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the  symbol to view information about a locality.
The  symbol next to localities in the list
can be used to jump to that position on the map. These maps work faster with Firefox!
|