( ʘ дʘ) [SU][gemsona] 創角,自己畫開心的 Obsidian 黑曜石 Plurk

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Obsidian is a felsic, naturally occurring volcanic glass. It has 69-77% silica and is relatively high in alkalis (>7%) and low in iron and magnesium oxides. This rock is mostly extrusive (with some intrusive) and forms from the rapid cooling of highly viscous, often rhyolitic, or granitic magma. The rapid cooling and high viscosity results in.

9 Best Places Where Obsidian Can Be Found In The United States Rock

Obsidian generally contains less than 1 percent water by weight. Under high pressure at depth, rhyolitic lavas may contain up to 10 percent water, which helps to keep them fluid even at a low temperature. Eruption to the surface, where pressure is low, permits rapid escape of this volatile water and increases the viscosity of the melt.

( ʘ дʘ) [SU][gemsona] 創角,自己畫開心的 Obsidian 黑曜石 Plurk

Obsidian is defined as having a density of about .98 grams per cubic centimeter, which is very close to the average for most types of rocks and minerals. When compared with other naturally occurring stones like granite, which is an igneous rock, obsidian is much heavier. Granite can weigh anywhere from .77 to about two grams per cubic centimeter.

How to tell the Difference between Black Onyx, Jet, Apache Tear, Black

Obsidian is an extreme variety of igneous rock with a glassy texture. Most popular accounts say that obsidian forms when lava cools very quickly, but that is not quite accurate. Obsidian starts with lava very high in silica (more than about 70 percent), such as rhyolite. The many strong chemical bonds between silicon and oxygen make such lava.

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Stainless Steel - An alloy of steel, chromium and manganese produces a corrosion-resistant metal with yield strength of up to 1,560 Mpa and a tensile strength of up to 1,600 Mpa. Like all types of steel, this alloy is highly impact resistant and scores mid-range on the Mohs scale.

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Here's my short answer: • Plaintext, standard markdown, .md files • Customizable; I can shape it to my needs, preferences, and tastes, even without knowing how to write code • Versatile; I can write in standard paragraphs and in outlines as needed, from atomic notes to longform • Large, friendly, supportive community

What Color Is Obsidian? About Obsidian Color (Updated 2023)

This lightweight, translucent crystal was named after its discoverer, the Roman explorer Obsius who came across Obsidian in Ethiopia. Obsidian is a smooth, glossy crystal however you may also find it to be brittle and have sharp edges. it rates as a 5-6 on the Mohs hardness scale which makes it weaker than Quartz which is a 7, however it is.

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November 18, 2022 (Credit: Obsidian) The Bottom Line With rich customization options, plug-ins galore, and the ability to connect notes in a network-like structure, Obsidian is a note-taking.

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The application feels very responsive and relatively lightweight. The places where your files are stored are very transparent. The search is very fast and pretty powerful. I personally like that there are two modes, one for editing and one for viewing. The command palette is well-implemented. It is very extensible.

Why is Obsidian So Good for Flintknapping? (Plus a Few Good

Andesite is an extrusive igneous rock that is higher in silica than basalt and lower than rhyolite or felsite. Click the photo to see the full-size version. In general, color is a good clue to the silica content of extrusive igneous rocks, with basalt being dark and felsite being light.

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If you're comparing obsidian to onyx (2 that are quite often confused), obsidian will be the lighter weight of the two because it's less dense than onyx (due to the lack of crystalline structure and interior air bubbles) and can even be translucent in spots if you hold it up to the light…s omething really hard to capture in a photo for me…but I tried in the below photo.

The Many Variations of Obsidian Rock

Amplenote has some Obsidian features (backlinking) and is very focused on being markdown exportable. They also plan on releasing a graph (i think) in the future. Amplenote is very early innings but I have been impressed by their speed of development and their commitment to hearing from their users. 1. Salt-Nebula5242.

Obsidian (Black) Meanings and Crystal Properties The Crystal Council

Obsidian is an igneous rock that forms when molten rock material cools so rapidly that atoms are unable to arrange themselves into a crystalline structure. It is an amorphous material known as a " mineraloid ." The result is a volcanic glass with a smooth uniform texture that breaks with a conchoidal fracture (see photo). Where Does Obsidian Form?

Block of the Week Obsidian Minecraft

Obsidian adopts the powerful and lightweight Markdown syntax for formatting your notes. This allows you to focus on your thoughts without getting distracted by complex formatting options. Interlinking. Obsidian's unique strength lies in its ability to create bi-directional links between notes. By simply mentioning the title of another note.

Obsidian AMNH

Portions of this obsidian flow are mixed with layers of pumice, a glassy, bubble-rich, lightweight rock that develops when water vapor (steam) escapes rapidly from the molten glass at or near the ground surface. Sometimes obsidian of excellent quality develops as surface lava flows.

Obsidian (Black) Metaphysical Properties and Meanings The Crystal Council

First, What is Obsidian? Obsidian is a lightweight note-taking app that markets itself as "Your Second Brain." And it lives up to the hype. It's built using Electron, a lightweight app.