biotite

send me a crystal and i'll tell...
  • abalone: what kind of situations compromise my muse emotionally
  • aegerine: my muse's opinion of the supernatural
  • agate: how my muse calms down
  • blue lace agate: my muse's favorite form of communication (verbal, letters, texting, etc.)
  • fire agate: if my muse is brave or cowardly
  • moss agate: if my muse has a high or low opinion of themself
  • amazonite: what kind of situations call for my muse to be dishonest
  • amethyst: what my muse would most like to be able to shape-shift into
  • ammolite: how lucky or unlucky my use is
  • angel aura quartz: my muse's opinion of LGBT+ issues
  • apache tears: a sadness headcanon
  • apatite: a headcanon about my muse's intuition
  • apophyllite: my muse's religious/spiritual beliefs
  • aquamarine: where my muse feels most calm/relaxed
  • biotite: the biggest problems my muse is currently dealing with
  • bloodstone: how my muse sees themself as part of the world at large
  • calcite: my muse's social tendencies (introverted vs extroverted, parties vs one-on-one conversations, etc.)
  • carnelian: an art-related headcanon
  • celestite: how my muse deals with anxiety
  • chalcedony: the saddest my muse has ever been
  • chalcopyrite: how my muse deals with ending relationships
  • charoite: who my muse looks up to
  • chrysocolla: a money-making headcanon
  • copper: how I think my muse will end up when they're older
  • coral: how my muse views the natural world
  • diamond: a sex headcanon
  • dolomite: a sleep headcanon
  • emerald: how my muse tells someone they love them without words
  • fluorite: what my muse's room looks like
  • fossil: what my muse's dream job is
  • galena: what it's like to be in a relationship with my muse
  • garnet: what my muse's perfect partner would be
  • gold: my muse's financial situation
  • hematite: how squeamish my muse is
  • hiddenite: how much of an "inner child" my muse has
  • iolite: my muse's drinking habits
  • jade: if my muse would ever cheat on a partner
  • jasper: what my muse would be like as a parent
  • kyanite: an anger headcanon
  • lapis lazuli: where 'home' is to my muse
  • lodestone: what kind of people gravitate towards my muse
  • malachite: what my muse as a child thought they would be when they grew up
  • mica: what my muse views as their worst personality trait
  • moonstone: my muse's opinions on outer space
  • mother of pearl: if my muse tends to lift people up or bring them down
  • nebula stone: how good my muse's memory is
  • obsidian: which of the seven deadly sins my muse would be
  • opal: how creative my muse is
  • pearl: a mental health headcanon
  • petalite: what my muse would do if they found a wallet on the street
  • pyrite: a physical health headcanon
  • quartz: how my muse thinks other people see them
  • rhodonite: if my muse prefers elegance or convenience
  • rubellite: if my muse has any 'triggers' that inspire painful memories
  • ruby: a happiness headcanon
  • sapphire: if everyone my muse knew was hanging off a cliff and they could only choose three to save, the rest certainly dying, who they would choose
  • serpentine: how my muse would seduce another [alt: how my muse makes their money]
  • silver: if my muse prefers masculinity or femininity
  • tsavorite: if my muse believes in destiny or fate
  • ulexite: how empathetic/sympathetic/compassionate my muse is
  • unakite: what my muse's ideal pet would be
  • verdite: my muse's ethnicity/family history
  • zebra stone: what gets my muse excited
  • zoisite: does my muse believe everything's going to work out for them in the end or not?

sunstone with biotite

Sunstone is a plagioclase feldspar with a unique glitter from platelets of hematite. Typically it has a red, more rarely a blue or green, glitter. Star sunstones are known but rare. Deposits are found in India, Canada, Madagascar, Norway, Russia and the USA.

Biotite is a common phyllosilicate mineral within the mica group. More generally, it refers to the dark mica series, primarily a solid-solution series between the iron-endmember annite, and the magnesium-endmember phlogopite. Biotite was named by J.F.L. Hausmann in 1847 in honor of the French physicist Jean-Baptiste Biot, who performed early research into the many optical properties of mica.

youtube

A video [not mine] of biotite exhibiting its characteristic extinction property commonly referred to as “Birds Eye Extinction.” This mottling of interference colors occurs under crossed polarized observation of biotite crystals that are oriented parallel with the polarizer/analyzer [NS, EW] Birds Eye Extinction is a very useful property use to help distinguish biotite from other minerals like hornblende. ( I love optical mineralogy so very much.)

lepidolite

blade/slice: 42g/210cts & 45x45x9mm

Lepidolite is one of the mica group along with biotite, muscovite, phlogopite (about 30 in total). These aluminium silicates are among the most common rock-forming minerals and major ingredients in all three rock types. Lepidolite is relatively rare and forms only in granite pegmatites, where there is plenty of lithium present and where minerals have been replaced with other minerals repeatedly over time. It sometimes forms when lithium minerals alter muscovite, creating beautiful lace-like rims.

Sand patterns

The swirling waters of the Ocean’s waves brushing to and fro against the shore have sorted out the sands by density, creating these lovely shapes made of crystals of different minerals. When I see them on the beach by the Rio de la Plata on my daily walks, quartz and dark biotite mica are the culprits, though I am unsure if the same combination is present in the photo. They aren’t always present, leading me to suspect that they are formed in a particular pattern of currents that turns up every now and then, as I don’t have a dataset big enough yet for my brain to start perceiving any rhythms that may be present.

Loz

Image credit: European Wildlife Photographer of the Year