Oxo-magnesio-hastingsite

Oxo-magnesio-hastingsite
Classificazione Strunz (ed. 10[1])9.DE.15[1]
Formula chimicaNaCa2(Mg4Fe3+)Si6Al2O22O2[2]
Proprietà cristallografiche
Gruppo cristallinotrimetrico[3]
Sistema cristallinomonoclino[3]
Classe di simmetriaprismatica[3]
Parametri di cellaa=9,8837(3) Å, b=18,0662(6) Å, c=5,3107(2) Å, β=105,278(1)°, V=914,77(5) Å³, Z=2[3]
Gruppo puntuale2/m[3]
Gruppo spazialeC2/m[3]
Proprietà fisiche
Densità misurata3,19(2)[4] g/cm³
Densità calcolata3,219[4] g/cm³
Durezza (Mohs)6[4]
Sfaldaturaperfetta secondo {110}[4]
Fratturascabra[4]
Coloremarrone[4]
Lucentezzavitrea[4]
Opacitàtrasparente in piccoli frammenti[4]
Strisciobianco[4]
Si invita a seguire lo schema di Modello di voce – Minerale

L'oxo-magnesio-hastingsite è un minerale, un anfibolo appartenente al gruppo degli ossi-anfiboli[5].

È un anfibolo anidro scoperto nell'area del lago Natron nel nord della Tanzania, più precisamente nel piccolo cono vulcanico di Deeti, uno degli oltre duecento presenti nell'area[6].

Nel 1997 furono rinvenuti nel cono vulcanico di Deeti dei megacristalli di anfibolo insolitamente grandi classificati come pargasite ed orneblenda-pargasite ma analisi cristallografiche e chimiche più dettagliate hanno provato che si trattava di un nuovo anfibolo in seguito approvato dall'IMA nel 2011 con il nome di ferrikaersutite e formula chimica NaCa2(Mg3Fe3+Ti)Si6Al2O22O2 ma nel 2013 il nome e la formula chimica sono stati cambiati in quelli attuali in seguito alle modifiche della nomenclatura degli anfiboli adottate nel 2012 (IMA 2012)[4].

Morfologia

L'oxo-magnesio-hastingsite è stata trovata sotto forma di cristalli singoli fino a 12 cm di forma arrotondata senza facce cristalline evidenti con un caratteristico aspetto liscio di colore bruno, raramente presentano inclusioni euedrali di diopside[4].

Origine e giacitura

L'oxo-magnesio-hastingsite è stata scoperta nel tufo melilitico contenente, oltre all'anfibolo, megacristalli di diopside e flogopite e xenoliti di peridotiti anfibolo-micacee, pirosseniti e ijoliti[4]

Note

  1. ^ a b (EN) Oxo-magnesio-hastingsite mineral information and data — mindat.org, su mindat.org. URL consultato il 31 luglio 2014.
  2. ^ Zaitsev, p. 2773.
  3. ^ a b c d e f Zaitsev, p. 2781.
  4. ^ a b c d e f g h i j k l Zaitsev, p. 2774.
  5. ^ Hawthorne, pp. 2039-2040.
  6. ^ Zaitsev, pp. 2773-2734.

Bibliografia

Altri progetti

Collegamenti esterni

  Portale Mineralogia: accedi alle voci di Wikipedia che trattano di mineralogia

Read other articles:

Arondisemen Largentière

Arondisemen Largentière Administrasi Negara Prancis Region Rhône-Alpes Departemen Ardèche Kanton 10 Komune 103 Sous-préfecture Largentière Statistik Luas¹ 1,928 km² Populasi  - 1999 44,264  - Kepadatan 23/km² Lokasi Lokasi Largentière di Rhône-Alpes ¹ Data Pendaftaran Tanah Prancis, tak termasuk danau, kolam, dan gletser lebih besar dari 1 km² (0.386 mi² atau 247 ekar) juga muara sungai. Arondisemen Largentière merupakan sebuah arondisemen di Prancis, terletak...

 

Bendera pribadi ratu Barbados

Bendera Pribadi Ratu Barbados Bendera Pribadi Ratu Barbados adalah bendera dari Ratu Elizabeth II dalam perannya sebagai Ratu dari Barbados. Bendera ini telah disetujui untuk digunakan pada 1970-an dan hanya digunakan oleh Ratu ketika dia berada di Barbados atau menghadiri sebuah acara di luar negeri dalam perannya sebagai kepala negara Barbados. Perwakilan Ratu, Gubernur-Jenderal Barbados memiliki bendera sendiri . Bendera ratu memiliki tiga bentuk: bendera terpusat terdiri dari pohon ara be...

 

Bar Harbor, Maine

Data dasar Negara: Amerika Serikat Negara bagian: Maine Wilayah: 182,4 km² Penduduk: 4.820 (2000) Kepadatan penduduk: 44,1 jiwa/km² Pendapatan per kapita: US$ 37.481 Bar Harbor adalah sebuah kota pelabuhan di Hancock County, Maine, Amerika Serikat. Bar Harbor didirikan pada tahun 1796. Awalnya bernama „Eden“; pada tanggal 3 Maret 1918 kota ini baru dinamai „Bar Harbor“. Bar Harbor adalah koloni musim panas terkenal di kawasan Down East Maine. Bar Harbor berbatasan dengan Taman Nasi...

Echo (damselfly)

Genus of damselflies Echo Echo margarita Scientific classification Domain: Eukaryota Kingdom: Animalia Phylum: Arthropoda Class: Insecta Order: Odonata Suborder: Zygoptera Family: Calopterygidae Subfamily: Calopteryginae Tribe: Mnaisini Genus: EchoSelys, 1853 Echo is a genus of damselflies belonging to the family Calopterygidae. There are five species.[1] A sixth, Echo maxima, is sometimes included, but it probably belongs to a different genus.[2] This genus is distributed in ...

 

Lusigliè

Lusigliècomune Lusigliè – VedutaPiazza don Gillone LocalizzazioneStato Italia Regione Piemonte Città metropolitana Torino AmministrazioneSindacoAngelo Marasca (lista civica Rinnovamento partecipazione solidarietà) dal 16-5-2011 (3º mandato dal 4-10-2021) TerritorioCoordinate45°19′06.24″N 7°45′59.95″E / 45.318401°N 7.766652°E45.318401; 7.766652 (Lusigliè)Coordinate: 45°19′06.24″N 7°45′59.95″E / 45...

 

One and Three Chairs

Conceptual artwork by Joseph Kosuth Joseph Kosuth, One and Three Chairs (1965) One and Three Chairs, 1965, is a work by Joseph Kosuth. An example of conceptual art, the piece consists of a chair, a photograph of the chair, and an enlarged dictionary definition of the word chair. The photograph depicts the chair as it is actually installed in the room, and thus the work changes each time it is installed in a new venue. Two elements of the work remain constant: a copy of a dictionary definition...

Paullo

Questa voce o sezione sull'argomento centri abitati della Lombardia non cita le fonti necessarie o quelle presenti sono insufficienti. Puoi migliorare questa voce aggiungendo citazioni da fonti attendibili secondo le linee guida sull'uso delle fonti. Segui i suggerimenti del progetto di riferimento. Paullocomune Paullo – Veduta LocalizzazioneStato Italia Regione Lombardia Città metropolitana Milano AmministrazioneSindacoFederico Lorenzini (lista civica) dal 2...

 

2004 North Carolina gubernatorial election

For related races, see 2004 United States gubernatorial elections. 2004 North Carolina gubernatorial election ← 2000 November 2, 2004 2008 →   Nominee Mike Easley Patrick Ballantine Party Democratic Republican Popular vote 1,939,154 1,495,021 Percentage 55.62% 42.88% County results Precinct resultsEasley:      40–50%      50–60%      60–70%      70–80% &...

 

Keyence

Keyence CorporationKantor pusat dan Laboratorium Keyence di Osaka, JepangNama asli株式会社キーエンスJenisPublik (K.K)Kode emitenTYO: 6861TOPIX Large 70 ComponentIndustriElektronikDidirikan27 Mei 1974; 49 tahun lalu (1974-05-27)KantorpusatOsaka, JepangTokohkunciTakemitsu Takizaki(Pendiri & Ketua Kehormatan)Akinori Yamamoto(Presiden)ProdukSensor otomasi pabrik, sistem pengukuran, machine vision, pemindai kode batang, penanda laser, dan mikroskop digitalPendapatan US$4,958 mili...

拉米兹·阿利雅

拉米兹·阿利雅Ramiz Alia第1任阿尔巴尼亚總統任期1991年4月30日—1992年4月9日继任萨利·贝里沙阿尔巴尼亚人民议会主席团主席任期1982年11月22日—1991年4月30日前任哈奇·列希继任转任总统阿尔巴尼亚劳动党第一书记任期1985年4月13日—1991年5月4日前任恩维尔·霍查继任无（政党解散） 个人资料出生(1925-10-18)1925年10月18日 阿尔巴尼亚斯库台逝世2011年10月17日(2011歲—10—17)（85�...

 

Development of the human body

Process of human growth to maturity Developmental redirects here. For other uses, see Development. Part of a series onHuman growthand development Stages Gamete Zygote Embryo Fetus Infant Toddler Child Preadolescent Adolescent Emerging and early adulthood Young adult Middle adult Old adult Dying Biological milestones Fertilization Pregnancy Childbirth Walking Language acquisition Puberty Menopause Ageing Death Development and psychology Pre- and perinatal Infant and child Nature versus nurture...

 

Home Rule League

Not to be confused with Indian Home Rule Movement or International Scots Home Rule League. Political party in Ireland Home Rule League The Irish harp, along with the coat of arms of the provinces of Ireland, played a prominent role in Home Rule League literature.Founded1873; 151 years ago (1873)Dissolved1882; 142 years ago (1882)Preceded byHome Government AssociationSucceeded byIrish Parliamentary PartyIdeology Irish nationalism Liberalism Pol...

Mangala Samaraweera

Mangala Samaraweeraමංගල සමරවීරமங்கள சமரவீர Menteri KeuanganMasa jabatan22 Mei 2017 – 17 November 2019PresidenMaithripala SirisenaPerdana MenteriRanil WickremesinghePendahuluRavi KarunanayakePenggantiMahinda RajapaksaMenteri MediaMasa jabatan22 Mei 2017 – 17 November 2019PresidenMaithripala SirisenaPerdana MenteriRanil WickremesinghePendahuluGayantha KarunathilakaPenggantiPetahanaMenteri Urusan Luar NegeriMasa jabatan12 Januari 20...

 

Typographies d'Apple

Si ce bandeau n'est plus pertinent, retirez-le. Cliquez ici pour en savoir plus. Cette section ou cet article est une traduction incomplète (anglais) (juin 2024). Vous pouvez modifier la page pour effectuer la traduction. Si ce bandeau n'est plus pertinent, retirez-le. Cliquez ici pour en savoir plus. Cet article ne cite aucune source et peut contenir des informations erronées (signalé en septembre 2022). Si vous disposez d'ouvrages ou d'articles de référence ou si vous connaissez d...

 

توماس رودني

توماس رودني معلومات شخصية الميلاد 4 يونيو 1744   مقاطعة كينت  الوفاة 2 يناير 1811 (66 سنة)   ناتشيز  الإقامة دوفر  مواطنة الولايات المتحدة  الأولاد أوغسطس قيصر رودني  إخوة وأخوات سيزر رودني  مناصب الحياة العملية المهنة محامٍ،  وقاضٍ  الحزب الحزب الجمهوري �...

Isle of Man TT

Tập tin:Isle of Man TT.svg Isle of Man Tourist Trophy Region Isle of Man Date 30 May to 12 June (2015) Type Road Course Clerk of the Course Gary Thompson MBE BEM Event Organiser ACU Events Ltd Principal sponsor Isle of Man Department of Economic Development History First race 1907 Number of races 95 (2014) First winner Charles R. Collier (1907) Most wins Joey Dunlop 26 (1977–2000) Lap record Bruce Anstey 17:06.682 132.298 mph hay 212.913 km/h (2014) Isle of Man TT là một gi�...

 

Canton of Dol-de-Bretagne

Canton in Brittany, FranceDol-de-BretagneCantonCountryFranceRegionBrittanyDepartmentIlle-et-VilaineNo. of communes31SeatDol-de-BretagneArea452.48 km2 (174.70 sq mi)Population (2021)[1]44,860 • Density99/km2 (260/sq mi)INSEE code35 07 The Canton of Dol-de-Bretagne is a canton of France, in the Ille-et-Vilaine département, located in the north of the department. At the French canton reorganisation which came into effect in March 2015, the ...

 

Archaea

Pour l’article homonyme, voir Archaea (genre). Archaea Halobacterium sp. souche NRC-1.Chaque cellule mesure environ 5 μm de long.Classification DomaineArchaeaWoese, Kandler (en) & Wheelis (en), 1990 RègneArchaeaWoese, Kandler (en) & Wheelis (en), 1990[1] Synonymes Archaebacteria Mendosicutes Metabacteria Classification phylogénétique Position : Domaine : Bacteria Domaine : Archaea Règne : Archaea Phylum : Crenarchaeota Classe&#...

番匠川

番匠川 JR日豊本線から上流方を望む水系 一級水系 番匠川種別 一級河川延長 38 km平均流量 12.38 m3/s（番匠橋観測所 2000年）流域面積 464 km2水源 三国峠（大分県）水源の標高 664 m河口・合流先 佐伯湾（大分県）流域 日本 大分県 テンプレートを表示 番匠川（ばんじょうがわ）は、大分県南部を流れる一級河川番匠川水系の本流。九州屈指の清流として知られる。 地理 佩楯...

 

Arcadia Park (Warsaw)

Urban park in Warsaw, Poland This article is about an urban park in Warsaw, Poland. For an urban park in Odesa, Ukraine, see Arcadia Park (Odesa). For other uses, see Arcadia (disambiguation). Arcadia ParkThe Arcadia pond in the Arcadia Park, in 2017.TypeUrban parkLocationWarsaw, PolandCoordinates52°11′25″N 21°01′43″E / 52.19028°N 21.02861°E / 52.19028; 21.02861Created1970 The Arcadia Park[a] is an urban park in Warsaw, Poland. It is located in the ...