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Inspirational songs // daily updates

Joi, 8 Septembrie, 2011

I should live long, because I have not heard all the music I want to hear.

Reclame

3D Geologist – a gold miner game

Luni, 26 Februarie, 2018

3D Geologist – a gold miner game – FREE, EDUCATIONAL and ADDICTIVE geological game

A gold miner game. This is a must-have for every Geologist! Educational, entertainment and addictive geological game.

Download link: https://play.google.com/store/apps/details?id=com.geologist.gold.miner.game.lite

3D Geologist is the first 3D adventure game for geologists dedicated to all regardless of their age, from children and students to old geologists or prospectors. 3D Geologist aims to help them to find the „truth about” Earth and offers a constant feeling of discovery; looking at the simplest mineral on a molecular level is like describing a whole new world.

Made by a Geologist for Geologists.

THE 3D GEOLOGIST – A GOLD MINER GAME FEATURES:

► Premium design
★ Realistic graphics / 3D graphics;
★ Premium mining visual effects.

► A gold miner gameplay
★ Realistic mining game;
★ Storyline: the player will learn about general geological aspects, about crystallography and mineralogy facts, and later about petrology (including here sedimentary, magmatic and metamorphic rocks).
★ Dynamic mining sound and music;
★ Load/Save game, resume your last play.

Note: This Early Access game with levels in progress is not complete and certainly, changes will occur further.

Facebook – https://www.facebook.com/Geology.Toolkit

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Keywords: 3D Geologist, Geology, gold, mining simulator, minerals, rocks, mineralogy, gemstones, prospector

Treizeci

Joi, 30 Noiembrie, 2017
tags:

Pune paharul ascuns pe masă, închide ochii, deschide-ți sufletul și ascultă-mă.

Mă arunc înapoi, în timp, (ce) se împușcă dorul în picior. Mă așez. Mă liniștesc. Frumoasă mai ești tu viață ce te uiți la mine de sus, iar eu nu mai vreau să mă întorc. Iar eu, cel ce mereu mi-am făcut curaj să mă uit la tine și să zâmbesc.
Un singur dor mă mai adună. Mă uit spre est și mă întreb de ce zâmbesc. Dorul de un turn de apă. Frumoasă mai ești tu din caramidă! Iar iedera își face curaj și mă aruncă zâmbind în patul de sus. La etaj.
Jos, e la fel, simplu dar tot(ul) din cărămidă, o casă alipită la o verandă mințită mai târziu în seră. N-aș schimba nimic! Iar florile încă-mi vorbesc.
Nici vorbă de sfârşit. Nici vorbă de vreun sărut. Pe mâine… sau nu.

Cu drag, Andrei.

Geology Toolkit | Premium

Joi, 9 Iunie, 2016

Geology Toolkit | Premium – a complete android application which allows geologists to examine and explore minerals and rocks features.
Geology Toolkit makes mineralogy and igneous petrology to be easier to examine a thin section and to understand the characteristic properties for each mineral/rock without a petrographic microscope, which is known to be very expensive. It is mainly addressed to geoscience students / geologists as a guide in individual or supervised laboratory work.
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PREMIUM vs LITE version:
+ Ad free;
+ Premium design;
+ Search in 5125 Mineral species (mineral name, chemistry, elements, country of type locality and structural groupname);
+ Gemstones section. Informations about gemstones, jewelry and precious metals;
+ 48 crystal forms with axes and miller indices;
+ IdentifyMin (Hand-Specimen);
+ Handy Rock Identification;
+ Sedimentary and Metamorphic rocks classification;
+ Swipeable gallery (touch-friendly – swipe & panzoom) with pictures of minerals and rocks thin sections under microsope;
+ Hand-specimen photographs (at high resolution) of 43 most common minerals with panzoom functionality;
+ Solubility chart;
+ Geology quotes;
+ REAL support to the development of this application!
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OTHER FEATURES:
✔ 43 most common minerals in thin section (transmited and reflected light);
✔ 18 most common igneous rocks in thin section (transmited light): alkali-feldspar granite, alkali-feldspar rhyolite, granite, rhyolite, granodiorite, tonalite, dacite, diorite, andesite, basalt, gabbro, alkali-feldspar syenite, alkali-feldspar trachyte, syenite, trachyte, foid syenite, peridotite and harzburgite;
✔ Mineral Classification of over 200 common species;
✔ Geological Time Scale feature;
✔ Glossary with terms used in optical mineralogy;
✔ Search or browse for minerals by name or by their properties in thin sections;
✔ IdentifyMin under microscope is an algorithm for a fast and accurate identification of minerals in thin sections;
✔ Browse igneous rocks which contain a classification for volcanic and plutonic rocks;
✔ Textures and microstructures of igneous rocks;
✔ Interactive QAPF diagrams (volcanic and plutonic rocks);
✔ Periodic Table of Elements;
✔ Mohs Hardness Scale;
✔ Engineering Geology section;
✔ Diagram for modal classification of gabbroic rocks;
✔ Interactive Ultramafic diagrams (Ol-Opx-Cpx & Ol-Px-Hbl);
✔ Interactive TAS diagram;
✔ Bowen’s reaction series;
✔ A clean and fast application;
✔ Supports phones and tablets.

Note: I constantly update this application with new features and photos.

https://play.google.com/store/apps/details?id=mvpm.minerals.and.rocks.geology.toolkit.premium

mVPM – Mobile Virtual Petrographic Microscope //by Andrei Ionut Apopei

Duminică, 18 Octombrie, 2015

Mobile Virtual Petrographic Microscope – a free virtual petrographic microscope application which allows users to examine and explore minerals and rocks features.
mVPM makes mineralogy to be easier to examine a thin section and to understand the characteristic properties for each mineral without a petrographic microscope, which is known to be very expensive. It is mainly addressed to students as a guide in individual or supervised laboratory work.

FEATURES:
✔ 37 most common minerals in thin section;
✔ A clean and fast application;
✔ Supports phones and tablets;
✔ Browse rocks which contain a classification for volcanic and plutonic rocks
✔ Interactive QAPF diagrams (volcanic and plutonic rocks)
✔ Diagram for modal classification of gabbroic rocks
✔ Interactive Ultramafic diagrams (Ol-Opx-Cpx & Ol-Px-Hbl)
✔ Interactive TAS diagram
✔ Bowen’s reaction series
✔ Glossary with terms used in optical mineralogy
✔ Mineral Classification of over 200 common species
✔ Search or browse for minerals by name or by their properties in thin sections;
✔ IdentifyMin is an algorithm for a fast and accurate identification of minerals in thin sections.
Note: I constantly update this application with new features and photos.

Download link: https://play.google.com/store/apps/details?id=mvpm.minerals.and.rocks

Mineralogy and geochemistry of Pb–Sb/As-sulfosalts from Coranda-Hondol ore deposit (Romania) — Conditions of telluride deposition

Luni, 5 Octombrie, 2015

Andrei Ionut APOPEI1,*, Gheorghe DAMIAN1,2, Nicolae BUZGAR1, & Andrei BUZATU1
1“Alexandru Ioan Cuza” University of Iaşi, Faculty of Geography and Geology, Department of Geology, 20A Carol I Blv., 700505 Iaşi, Romania, *e-mail: andrei_ionut1987@yahoo.com
2Tech Univ Cluj Napoca, North University Center of Baia Mare, 62A Dr. Victor Babeş Street, 430083 Baia Mare, Romania.

Ore Geology Reviews, 2016, 72:857–873.
DOI: 10.1016/j.oregeorev.2015.09.014 · 3.56 Impact Factor

Abstract:

Electron microprobe analyses are reported on newly-identified occurrences of Pb–Sb/As sulfosalts from the Coranda-Hondol ore deposit, Certej area, South Apuseni Mountains, Romania. The Coranda-Hondol deposit is an intermediate-sulfidation Au–Ag epithermal system hosted in propylitic altered andesitic rocks covered by Cretaceous and Neogene sediments. The main base-metal sulfides are sphalerite, pyrite and galena. Subordinate amounts of chalcopyrite, arsenopyrite, pyrrhotite, marcasite, tetrahedrite–tennantite, bournonite–seligmannite ± geocronite–jordanite, stibnite and Au–(Ag)–tellurides complete the paragenetic sequence. Gangue minerals are quartz, calcite and barite. Hydrothermal alteration is expressed as pyritisation, silicification, potassic alteration, carbonitisation and phyllic (or sericitic) alteration.

Minerals of the bournonite–seligmannite and geocronite–jordanite series are described for the first time in samples from different levels of the Coranda-Hondol open pit. Both series show chemical variations in terms of Sb/(As + Sb) ratio, and display a general spatial trend within the deposit in which the Sb content of both series tends to increase towards upper levels. Textural relationships between the two sulfosalt series and their chemical variations suggest that the presence of Sb in hydrothermal fluids favors precipitation of bournonites, whereas As favors precipitation of jordanites. Compositions of minerals from the bournonite–seligmannite and geocronite–jordanite series extend from Bnn35 to Bnn98, and from Gcn14 to Gcn76, respectively. Back-scattered electron imaging reveals grain-scale compositional heterogeneity in bournonite–seligmannite, seen as concentric and layered oscillatory zoning patterns. These zoning patterns were observed only in the upper parts of the deposit, and suggest an increasing As content in late fluids.

Trace elements (Te, Se and Fe) are preferentially incorporated into Sb-rich members of Bnn–Slg series. This is consistent with the association of gold–silver–tellurides and bournonites identified at the Coranda-Hondol deposit. Variable conditions within the Coranda-Hondol hydrothermal system suggest that precipitation of Au ± Ag–tellurides occurred via two possible mechanisms: (i) Te vapor condensation into precious metal brines during boiling and (ii) by fluid throttling with periodic release of volatiles.

Keywords: Bournonite–seligmannite; Geocronite–jordanite; Tellurides; Compositional variations; Coranda-Hondol deposit, Certej area

Abstract | Full text

The Raman study of weathering minerals from the Coranda-Hondol open pit (Certej gold-silver deposit) and their photochemical degradation products under laser irradiation

Marți, 1 Septembrie, 2015

Andrei Ionut APOPEI1,*, Nicolae BUZGAR1, Gheorghe DAMIAN1,2 & Andrei BUZATU1
1“Alexandru Ioan Cuza” University of Iaşi, Faculty of Geography and Geology, Department of Geology, 20A Carol I Blv., 700505 Iaşi, Romania, *e-mail: andrei_ionut1987@yahoo.com
2Tech Univ Cluj Napoca, North University Center of Baia Mare, 62A Dr. Victor Babeş Street, 430083 Baia Mare, Romania.

The Canadian Mineralogist 12/2014; 52(6):1027-1038.
DOI:10.3749/canmin.1300054 · 1.13 Impact Factor

Abstract:

The Coranda-Hondol ore deposit (Certej, Romania) is a sulfide ore deposit that was mined primarily for gold, silver, lead, and zinc. Secondary minerals were formed through a precipitation process from sulfate solutions with a high concentration of dissolved metals (especially Fe). These sulfate solutions resulted from acid mine drainage. Fourteen waste samples were analyzed through Raman spectrometry, X-ray diffraction, and scanning electron microscopy. Fe3+-, Fe2+-, Cu-, Zn-, Ca-, Mg-, and MnAl-hydrated sulfates were identified. All are unstable when exposed to the laser beam of the Raman spectrometer. Coquimbite, copiapite, ferricopiapite, hydroniumjarosite, and gunningite turn into anhydrous forms or oxides, depending on the laser power. Gypsum turns into bassanite, while apjohnite loses all water molecules at 53.6 mW laser power on the surface of the sample. Rhomboclase, melanterite, rozenite, antlerite, and brochantite break down without forming new minerals. Fe2+-sulfates do not change into hematite under laser irradiation. Epsomite and hexahydrite are stable at 53.6 mW laser power.

Keywords: Raman spectrometry, weathering, sulfates, photochemical degradation, laser irradiation

Abstract | Full text

New occurrences of hessite, petzite and stützite at Coranda-Hondol open pit (Certej gold-silver deposit, ROMANIA)

Joi, 10 Aprilie, 2014

Andrei Ionut APOPEI1,*, Gheorghe DAMIAN1,2, Nicolae BUZGAR1, Stanislava MILOVSKA3 & Andrei BUZATU1
1“Alexandru Ioan Cuza” University of Iaşi, Faculty of Geography and Geology, Department of Geology, 20A Carol I Blv., 700505 Iaşi, Romania, *e-mail: andrei_ionut1987@yahoo.com
2Tech Univ Cluj Napoca, North University Center of Baia Mare, 62A Dr. Victor Babeş Street, 430083 Baia Mare, Romania.
3Geological Institute, Slovak Academy of Sciences, Severná 5, 974 01 Banská Bystrica, Slovakia.

Abstract:

Au-Ag- and Ag-tellurides are widely abundant in the vast majority of the “Golden Quadrilateral” (Metaliferi Mts., Romania) ore deposits. Optical microscope observations, electron microprobe and μ-Raman analyses have been successfully carried out to identify Au-Ag-Te minerals from Coranda-Hondol open pit (part of Certej deposit, South Apuseni Mountains, in Romania). The identified tellurides are hessite (Ag2Te), petzite (Ag3AuTe2) and stützite (Ag5-xTe3, where x = 0.24-0.36) and they usually occur as patches (reaching 90-100 μm in length) in galena, bournonite-seligmannite or at the contact between the last three minerals. In general, all the microanalytical data are stoichiometric with a slightly compositional variation in the case of hessite. The μ-Raman spectrum of stützite shows a characteristic Raman fingerprint with a very strong band at 147 cm-1. The broadness of the Raman band (147 cm-1) indicates a non-homogeneous distribution and, in conjunction with the strong heterogeneity observed under microscope, it suggests that the tellurides have formed contemporaneously and they can possibly be attributed to a later silver-rich telluride-bearing substage.

Keywords: Certej, Coranda-Hondol, tellurides, hessite, petzite, stützite, EPMA, Raman spectroscopy

Full text

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