If you are fascinated by the hidden structures of our planet, you have likely come across
MOJAVEITE. This mineral is a compelling subject for study, offering a unique glimpse into the complex chemistry that shapes the Earth’s crust.Whether you are a student identifying a hand sample, a researcher looking for crystallographic data, or a collector curious about a new find, this guide breaks down everything you need to know about
MOJAVEITE. From its precise chemical formula to the geological environments where it thrives, let’s explore what makes this mineral distinct.
The Chemistry Behind the Crystal
Every mineral tells a story through its chemistry. At its core,
MOJAVEITE is defined by the chemical formula
Cu6(Te6+O4(OH)2)(OH)7Cl.This isn’t just a string of letters and numbers; it represents the precise recipe of elements that nature used to build this specimen. This specific chemical composition is what gives the mineral its stability and dictates how it reacts with acids, heat, or other minerals. It is the fundamental “DNA” that geologists use to classify it within the larger mineral kingdom.
Crystallography: Geometry in Nature
One of the most beautiful aspects of mineralogy is the hidden geometry within every stone.
MOJAVEITE crystallizes in the
Hexagonal-Trigonal system.Think of this as the mineral’s architectural blueprint. It dictates the symmetry and the angles at which the crystal faces grow. Digging deeper into its symmetry, it falls under the
Trigonal pyramidal.
- Point Group: 3
- Space Group: R3
Why does this matter? These crystallographic details are like a fingerprint. They influence optical properties—how light travels through the crystal—and physical traits like how it breaks or cleaves when struck.
Internal Structure and Unit Cell
If we could zoom in to the atomic level, we would see the “Unit Cell”—the smallest repeating box of atoms that builds up the entire crystal. For
MOJAVEITE, the dimensions of this microscopic building block are:
a=8.16Å, c=13.202Å, Z=
The internal arrangement of these atoms is described as:
Stoichiometries & unit-cell parameters imply that bluebellite & mojaveite are very similar in xl structure; structure models that satisfy bond-valence requirements are presented that are based on stackings of brucite-like Cu6MX14 layers, where M = (I or Te) & X = (O,OH & Cl); bluebellite & mojaveite provide rare instance of isotypy btw iodate containing I5+ with stereoactive lone electron pair & tellurate containing Te6+ with no lone pair.1 Nesotellurium Oxysalt: has brucite-like octahedral sheets in which 1/7 of cations are Te & 6/7 are Cu, while 1/14 of anions are Cl, & thus are not counted as part of structural unit; degree of Jahn-Teller distortion is relatively small, ½ Cu are regarded as coordinated by 5 (O,OH) ligands (+1 Cl) while other ½ have 6 O neighbors; ordering pattern of cations & anions forces structure to adapt relative low-symmetry polar s.g. R3; layers are held together by H—bonds; mineral is isostructural with bluebellite.2 See “Additional Structures” tab for entry(s).3This internal structure is the invisible framework that supports everything we see on the outside, from the mineral’s density to its hardness.
Physical Appearance (Habit)
When you find
MOJAVEITE in the field, what does it actually look like? A mineral’s “habit” describes its typical shape and growth pattern.
- Common Habit: Micro plates, often curved; as compact balls
- Twinning:
Twinning is a fascinating phenomenon where two or more crystals grow interlocked in a specific symmetrical pattern. If MOJAVEITE exhibits twinning, it can be a dead giveaway for identification, distinguishing it from look-alike minerals.
Where is it Found? (Geologic Occurrence)
Minerals are the products of their environment. They don’t just appear anywhere; they need specific conditions—pressure, temperature, and chemical ingredients—to form.
Geologic Occurrence:
Lenticular ore body hosted in granite and limestoneKnowing this context helps geologists reconstruct the history of a rock formation. It tells us whether the rock was born from cooling magma, settled in an ancient ocean, or was transformed by the intense heat and pressure of metamorphism. For more broad geological context, resources like the
U.S. Geological Survey (USGS) provide excellent maps and data.
Related Minerals
No mineral exists in a vacuum.
MOJAVEITE is often related to other species, either through similar chemistry or structure.
Relationship Data:
Structurally related to bluebelliteUnderstanding these relationships is key. It helps us see the “family tree” of the mineral world, showing how different elements can substitute for one another to create an entirely new species with similar properties.
Frequently Asked Questions (FAQs)
1. What is the chemical formula of MOJAVEITE?The standard chemical formula for MOJAVEITE is
Cu6(Te6+O4(OH)2)(OH)7Cl. This defines its elemental composition.
2. Which crystal system does MOJAVEITE belong to?MOJAVEITE crystallizes in the
Hexagonal-Trigonal system. Its internal symmetry is further classified under the Trigonal pyramidal class.
3. How is MOJAVEITE typically found in nature?The “habit” or typical appearance of MOJAVEITE is described as
Micro plates, often curved; as compact balls. This refers to the shape the crystals take when they grow without obstruction.
4. In what geological environments does MOJAVEITE form?MOJAVEITE is typically found in environments described as:
Lenticular ore body hosted in granite and limestone. This gives clues to the geological history of the area where it is discovered.
5. Are there other minerals related to MOJAVEITE?Yes, it is often associated with or related to other minerals such as:
Structurally related to bluebellite.
External Resources for Further Study
For those looking to dive deeper into the specific mineralogical data of
MOJAVEITE, we recommend checking high-authority databases:
Final Thoughts
MOJAVEITE is more than just a name on a list; it is a testament to the orderly and beautiful laws of nature. With a chemical backbone of
Cu6(Te6+O4(OH)2)(OH)7Cl and a structure defined by the
Hexagonal-Trigonal system, it holds a specific and important place in the study of mineralogy.We hope this overview has helped clarify the essential data points for this specimen. Whether for academic study or personal interest, understanding these properties brings us one step closer to understanding the Earth itself.
