Kristal

Epidote - www.Crystals.eu

Epidote

Grup Epidote • Ca2(Al,Fe)3(SiO4)3(OH) Monoklinik • Biaxial (+) Mohs ~6–6.5 • SG ~3.3–3.5 Epidote 🌿 — Padhang Ijo Pistachio saka Ati Watu Metamorfik Ijo cerah, pleokroik banget, lan favorit ing...

Epidote

Grup Epidote • Ca2(Al,Fe)3(SiO4)3(OH) Monoklinik • Biaxial (+) Mohs ~6–6.5 • SG ~3.3–3.5 Epidote 🌿 — Padhang Ijo Pistachio saka Ati Watu Metamorfik Ijo cerah, pleokroik banget, lan favorit ing...

Howlite

Howlite

Howlite • mineral kalsium borate Formula: Ca2B5SiO9(OH)5 • Sistem: Monoclinic Kekerasan: ~3.5 • SG: ~2.53 • Kilap: pudar nganti sub-vitrous (satin nalika dipoles) Tampilan: putih kapur nganti putih abu-abu karo...

Howlite

Howlite • mineral kalsium borate Formula: Ca2B5SiO9(OH)5 • Sistem: Monoclinic Kekerasan: ~3.5 • SG: ~2.53 • Kilap: pudar nganti sub-vitrous (satin nalika dipoles) Tampilan: putih kapur nganti putih abu-abu karo...

Hypersthene - www.Crystals.eu

Hipersthene

Hypersthene • Seri Orthopyroxene (jeneng varietas) Formula: (Mg,Fe)SiO3 • Ortorombik Mohs ~5.5–6 • SG ~3.3–3.5 Pecahan: 2 arah ≈90° (prismatik) Optik: Biaxial (+); Pleokroik coklat ijo Fenomena: Schiller perunggu/perak Hypersthene...

Hipersthene

Hypersthene • Seri Orthopyroxene (jeneng varietas) Formula: (Mg,Fe)SiO3 • Ortorombik Mohs ~5.5–6 • SG ~3.3–3.5 Pecahan: 2 arah ≈90° (prismatik) Optik: Biaxial (+); Pleokroik coklat ijo Fenomena: Schiller perunggu/perak Hypersthene...

Iolite - www.Crystals.eu

Iolite

Iolite • Cordierite Kualitas Permata Formula: (Mg,Fe)2Al4Si5O18 • Siklosilikat Sistem Kristal: Ortorombik • Biaxial (–) Mohs ~7–7.5 • SG ~2.58–2.66 RI ~1.542–1.578 • Birefringence ~0.008–0.012 Ciri: Trikroisme intens (“water sapphire”)...

Iolite

Iolite • Cordierite Kualitas Permata Formula: (Mg,Fe)2Al4Si5O18 • Siklosilikat Sistem Kristal: Ortorombik • Biaxial (–) Mohs ~7–7.5 • SG ~2.58–2.66 RI ~1.542–1.578 • Birefringence ~0.008–0.012 Ciri: Trikroisme intens (“water sapphire”)...

Dumortierite

Dumorierite

Dumortierite • borosilikat aluminium kompleks — rumus kira-kira Al₇BO₃(SiO₄)₃O₃ Sistem kristal: Orthorhombic • Kebiasaan: fibrous, radial, prismatic; masif/granular Mohs: ~7–8.5 • SG: ~3.27–3.39 • Kilap: vitreous nganti alus kaya sutra...

Dumorierite

Dumortierite • borosilikat aluminium kompleks — rumus kira-kira Al₇BO₃(SiO₄)₃O₃ Sistem kristal: Orthorhombic • Kebiasaan: fibrous, radial, prismatic; masif/granular Mohs: ~7–8.5 • SG: ~3.27–3.39 • Kilap: vitreous nganti alus kaya sutra...

Heliotrope

Heliotrope

Heliotrop (Bloodstone) • variasi chalcedony — SiO₂ mikrokristalin Tampilan: basis ijo jero karo titik besi-oksida abang; “plasma” = ijo karo sawetara/ora ana tandha abang Mohs: ~6.5–7 • SG: ~2.58–2.64 •...

Heliotrope

Heliotrop (Bloodstone) • variasi chalcedony — SiO₂ mikrokristalin Tampilan: basis ijo jero karo titik besi-oksida abang; “plasma” = ijo karo sawetara/ora ana tandha abang Mohs: ~6.5–7 • SG: ~2.58–2.64 •...