Log InRegister
Quick Links : The Mindat ManualThe Rock H. Currier Digital LibraryMindat Newsletter [Free Download]
Home PageAbout MindatThe Mindat ManualHistory of MindatCopyright StatusWho We AreContact UsAdvertise on Mindat
Donate to MindatCorporate SponsorshipSponsor a PageSponsored PagesMindat AdvertisersAdvertise on Mindat
Learning CenterWhat is a mineral?The most common minerals on earthInformation for EducatorsMindat ArticlesThe ElementsThe Rock H. Currier Digital LibraryGeologic Time
Minerals by PropertiesMinerals by ChemistryAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
Mining CompaniesStatisticsUsersMineral MuseumsClubs & OrganizationsMineral Shows & EventsThe Mindat DirectoryDevice SettingsThe Mineral Quiz
Photo SearchPhoto GalleriesSearch by ColorNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day GalleryPhotography

Hellandite Group from
Himalaya Mine, Gem Hill, Mesa Grande Mining District, San Diego County, California, USA


Locality type:Mine
Classification
Species:'Hellandite Group' (not an IMA approved species)
Formula:X4Y2ZT2[B4Si4O22]W2
Comments:Found on PMC 2019 giveaway tables material from Garth Bricker's Himalaya mine self-collected flat from the 1980s. The specimens were gemmy quartz crystals partially covered with a snow-like layer of platy micro bavenite and associated with thin indicolite needles.
Habit:balls of needles
Colour:white, yellowish-white
Abundance at site:Very Rare
Confirmation
Validity:Confirmed
Confirmation Methods:Raman Spectroscopy
Data
Mineral Data:Click here to view Hellandite Group data
Locality Data:Click here to view Himalaya Mine, Gem Hill, Mesa Grande Mining District, San Diego County, California, USA
Data Identifiers
Mindat Occurrence Record ID:1534629
Long-form Identifier:1:3:1534629:8
GUID (UUID V4):5cf9540f-29b4-48c2-b772-53c1856594a5
References
Reference Search (possible matching items)
Book (edition)
(Brazil). Malcolm Back (Canada), Henry L. Barwood (USA). Dmitriy Belakovskiy (Russia). Fabio Bellatreccia...(Italy), T.S. Ercit (Canada). Alexander Falster (USA). Jeffrey de Fourestier (Canada). Robert Gault (Canada)...Henderson. Jr. (USA). D.D. Hogarth (Canada). J.L. Jam bor (Canada), Anthony R. Kampf (USA). Pave! M. Kartashov...Karnp-Moller (Denmark). Akira Kato (Japan). Lance E. Keams (USA). Elisabeth Kirchner (Austria), Uwe Kolitsch (Austria)...Republic). Per Nystcn (Sweden), David O'Hanlcy (USA). Filippo Olmi (deccased) (ltaly). Werner H. Paar
Book (edition)
Brazil, H Page 13: Gold, 35 mm.Eagle's est Mine, California, G Publi!>hed by Grdllit.u.o. Stefanikova43...to the chemical formula, allegiance to a mineral group, symmetry and crystal structure as well as the strongest...chemical formula, structure (crystal system, space group, and unit cell dimensions), and at least some other...site occupancy. The Sb members of the tennantite group (2.G) will serve as a good example: tetrahedrite...registered in this book (e.g. in the amphibole group). For more detailed information see "Dana's System
Journal (article/letter/editorial)
Be2AlO4. Twinned crystals from the Ratnapura district, Sri Lanka. Photograph of sample R100130 reproduced...Be4Si2O7(OH)2, in pseudohexagonal prisms from the Golconda mine, Governador Valadares, Minas Gerais, Brazil. Photograph...either from the CNMNC IMA or the RRUFF web sites). Group assignment is based largely on Back and Mandarino...controversial species, the gadolinite-datolite group mineral calcybeborosilite-(Y), (Y,REE,Ca)(B,Be)2(SiO4)2(OH...O)4 Class (Strunz and Nickel 2001) Supergroup or Group Complexity, IG, total Silicate Zeolite 579 Silicate
Book (edition)
Vesuvius, Italy (12, column 2) and SEMSEYITE, Julcani mine, Huancavelica, Peru (#3, column 2). Color, page...attempt a complete description of a small mineral group to uncover the unsatisfactory state of our present...well render the volume difficult to use by a large group of potential readers not familiar with structural/chemical...with the inherent problems of end-member names vs. group names and related aspects of nomenclature. Rather...synonyms, varietal names, gem names, spelling variants, descriptive names, mixtures, group names, chemical names
Report (volume)
period (Anovitz and Grew, Chapter 1) Tourmaline group. In addition to four new tourmaline species, a new...Diomignite Ginorite/strontioginorite Harkerite Hellandite Holtite Hulsite/magnesiohulsite Kornerupine Manandonite-2//2...with Stoichiometric Trigonal Boron Dumortierite group Description Chemical composition Occurrence Grandidierite...Borosilicates with Stoichiometric Tetrahedral Boron Axinite group Description xi 387 389 389 389 389 394 398 398...chemical composition Occurrence Bakerite Taramellite group Description Crystal structure and chemical composition
Report (volume)
BE bh ora S A iis See 150 UWAToke ecah ee ne" San aio Salliet SE RUE ig1 De EMBO Semnt EEE aN ae arene...Ac sunccn sack ood cesccece tenn aaa cane syk ees Usa RUT TRO Re ete ret ee 182 BAK CIC sc cee ca thabucasats...................0:2eeeceeeeeee 436 Kornerupine group: Kornerupine sensu stricto and prismatine.........437 Chemical.compositionsie:. 2205. 000.05. SAS San EUs ween ten 437 Mineral associations. «sain tnsanedesadecanances...eee au stole eee aR RE ee 464 Olivine and humite=group minérals-ecviuercentseckvadsveeecare von tee ease
Journal (issue)
mountain lies about 40 km east of Montreal in Rouville County, Quebec, very close to and clearly visible from...TRACHYGABBRO, NEPHEUNE DIORITE NEPHELINE SYENITE EAST HILL SUITE IGNEOUS BRECCIA, DIATREME BRECCIA PARAKALINE...nepheline gabbros, diorites and monzonites. The East Hill suite forms the eastern half of the mountain and...dated at 134 ± 6 Ma while the Pain du Sucre and East Hill suites have been dated at 120 ± 6 Ma (Currie et...quarries described above are located within the East Hill suite. The M ineralogical Record, volum e 21, Ju
 
Mineral and/or Locality  
Mindat Discussions Facebook Logo Instagram Logo Discord Logo
Mindat.org is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2024, except where stated. Most political location boundaries are © OpenStreetMap contributors. Mindat.org relies on the contributions of thousands of members and supporters. Founded in 2000 by Jolyon Ralph.
Privacy Policy - Terms & Conditions - Contact Us / DMCA issues - Report a bug/vulnerability Current server date and time: May 1, 2024 05:32:55
Go to top of page