What Can Break Obsidian in Real Life?
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Obsidian, often called volcanic glass, is a fascinating natural material with a unique set of properties. While it’s known for its sharp edges and glossy appearance, it’s also surprisingly fragile. So, what can actually break obsidian in real life? The straightforward answer is: impact, pressure, and other materials with sufficient hardness and force. While obsidian is relatively hard, it lacks toughness, making it susceptible to chipping, fracturing, and shattering. Let’s delve into the specifics of how this natural glass can be broken.
How Obsidian Breaks Down
Impact and Force
The most common way to break obsidian is through physical impact. Applying a significant force to obsidian, such as hitting it with a rock hammer or dropping it on a hard surface, will likely cause it to fracture. Because obsidian is a brittle material, it tends to break into sharp, curved fragments known as conchoidal fractures. This type of fracture is a characteristic feature of glass and glass-like substances. These broken edges can be incredibly sharp, making obsidian suitable for crafting cutting tools historically.
The Role of Hardness and Toughness
It’s crucial to understand the difference between hardness and toughness when discussing obsidian’s breaking points. Hardness refers to a material’s resistance to scratching, while toughness describes its ability to withstand impact without fracturing. Obsidian is relatively hard, rating around 5 to 6 on the Mohs Hardness Scale. This means it can resist scratching from most everyday materials. However, it’s not very tough, making it prone to chipping and breaking upon impact or bending forces. Materials with significantly higher hardness like diamonds can easily scratch obsidian. Its lack of toughness is what renders it unsuitable for durable jewelry like rings and bracelets.
Pressure
Applying sufficient pressure to obsidian can also cause it to break. This pressure might result from placing a heavy object on top of it or trying to bend or flex the material beyond its limit. The breaking point for obsidian under pressure is less than materials known for their strength such as steel and even some types of rocks. The brittle nature of obsidian means it doesn’t deform much under pressure before fracturing and is not at all malleable like some metals.
The Conchoidal Fracture
As discussed previously, obsidian breaks with a distinctive conchoidal fracture. This smooth, curved fracture pattern arises because of the near-absence of mineral crystals in the glass. These fractures can produce edges that are incredibly sharp, far exceeding what traditional rocks and stones can achieve and even capable of out matching the sharpness of steel. The intersection of multiple conchoidal fractures creates particularly sharp points, a feature that made obsidian a valuable material for tool making in the past.
Comparison to Other Materials
While it’s often stated that obsidian is the hardest material in Minecraft, this is not the case in the real world. In reality, obsidian is far from being the hardest natural material. Materials like diamond, with a Mohs hardness rating of 10, are much harder. While diamond can be cut and shaped with specialized tools and equipment, obsidian can be chipped and broken with regular tools like a hammer. Obsidian is also not as strong as steel or other metals which are all more resistant to breaking, and more importantly, deformation and bending.
Frequently Asked Questions (FAQs) about Breaking Obsidian
Is obsidian hard to break?
Obsidian is not difficult to break due to its brittle nature and low toughness. While relatively hard on the Mohs scale, it’s not as strong as other materials like steel or even many rocks. Impact forces are the main reason for breakage.
Can you break obsidian with your bare hands?
Yes, but with difficulty. Obsidian is fragile and can be broken by hand if you apply a lot of force or drop it from a height, however, attempting this could cause injury. Due to the sharpness of its fragments, hand breaking obsidian is not recommended.
What kind of impact can break obsidian?
Any significant impact, such as hitting it with a rock hammer, dropping it on a hard surface, or striking it against another object, can cause obsidian to break. The force required isn’t immense due to its brittle nature.
Can obsidian be scratched easily?
Obsidian, with a hardness of 5-6 on the Mohs scale, is not easily scratched by everyday materials. However, harder materials like quartz, topaz, or even hardened steel tools can scratch it. Diamond and other extremely hard materials will scratch it with ease.
Is obsidian stronger than glass?
Obsidian is a form of natural glass, so they share similar properties. Both are hard, brittle, and break with conchoidal fractures. While technically obsidian may be stronger than manufactured glass due to the cooling process, the difference isn’t substantial and they share similar weaknesses when compared to other materials.
Can temperature changes break obsidian?
Extreme temperature changes can cause stress fractures in obsidian, though it is unlikely to break from temperature alone unless exposed to extreme heat or sudden temperature fluctuations. The changes in temperature can result in a rapid expansion or contraction, resulting in a fracture, similar to how glass cracks.
Can explosives break obsidian?
Yes, while the primary method for mining it in video games often revolves around pickaxes, explosives can absolutely break obsidian in the real world. The force of an explosion will shatter the stone.
Can you cut obsidian?
Yes, but with difficulty. Obsidian is typically chipped or flaked, not cut, using a process called flintknapping. While harder materials can “cut” through obsidian, the result tends to be more akin to breaking it. Obsidian is most easily shaped by breaking it intentionally, rather than cutting it.
How does the conchoidal fracture affect obsidian’s breakability?
The conchoidal fracture is a type of curved fracture that produces extremely sharp edges, this affects how obsidian breaks, allowing it to break more easily into a wide variety of shapes and sizes. These sharp edges are both a benefit and a hazard.
Is it safe to handle broken obsidian?
No, broken obsidian is very dangerous due to its extremely sharp edges. Handle broken pieces with extreme caution, preferably with protective gloves. The edges can easily cause severe cuts.
Is blue obsidian harder than black obsidian?
No. Blue obsidian is a naturally rare or man-made variant of obsidian, but it shares the same properties as black obsidian. Both are volcanic glass and have the same hardness and brittleness. The color does not make a difference.
Can obsidian be molded or melted to change it’s shape?
Obsidian can be melted, but melting it to the point of malleability is extremely challenging outside of professional environments. Obsidian is a glass, and like glass, can be melted into a liquid, but when cooled, it would be nearly impossible to mold into a new shape, it would simply solidify as glass again. Obsidian is typically chipped rather than molded into new shapes.
Does obsidian have natural layers that affect its breakability?
Obsidian does not form in layers, as it is a natural glass, and therefore does not have strata or layers that would impact breakability.
Can obsidian be used for strong, load-bearing structures?
No, obsidian is not suitable for load-bearing structures due to its brittleness and low toughness. It will fracture and fail under significant pressure. It’s better to use materials with high tensile strength and durability for structural purposes such as concrete or steel.
What is the difference between obsidian and crying obsidian?
Crying obsidian is an artificial material found in the game Minecraft. It is designed to be a more rare and valuable resource, despite sharing all the properties of standard obsidian. Crying obsidian does not exist in real life. The game represents this type of obsidian as a warped form of normal obsidian.